radi
radi — 構詞成分
1. used before a noun to refer to energy that travels in the form of waves or parti
輻射
與輻射能或輻射有關的
used before a noun to refer to energy that travels in the form of waves or particles, such as light, heat, or X-rays
The scientist measured the solar radiation reaching the Earth's surface.
科學家測量了抵達地球表面的太陽輻射。
compound: solar radiation
Infrared lamps use radiant heat to warm people directly without heating the air.
紅外線燈利用輻射熱直接溫暖人體，不需要加熱空氣。
compound: radiant heat
Yara checked the radiance level of the fluorescent lights in the laboratory.
Yara 在實驗室裡檢查了螢光燈的輻射強度。
Workers who deal with radioactive materials must wear protective clothing at all times.
處理放射性物質的工作人員必須隨時穿著防護衣。
文法句型
radi- + noun (e.g., radiation, radiance)
用法筆記
Most words using this sense are technical or scientific. The related verb 'radiate' and noun 'radiation' are the most common forms in everyday English.
常見錯誤
2. used before a noun to refer to the process of unstable atoms releasing energy or
放射性
與放射性或放射性物質有關的
used before a noun to refer to the process of unstable atoms releasing energy or to materials that produce such energy
The hospital uses a radioactive substance to find tumours inside the body.
醫院使用放射性物質來尋找體內的腫瘤。
compound: radioactive substance
Lakshmi studied the radioactivity levels near the old power plant for her research project.
Lakshmi 為了她的研究計畫，測量了舊發電廠附近的放射性強度。
compound: radioactivity levels
Waste from nuclear reactors remains dangerously radioactive for thousands of years.
核反應爐產生的廢料在數千年內仍具有危險的放射性。
The lab technician checked whether any radioactive contamination had spread beyond the secure area.
實驗室技術員檢查了放射性污染是否已擴散到安全區域之外。
文法句型
radi- + noun (e.g., radioactive, radioactivity)
用法筆記
Commonly appears in 'radioactive' (adjective) and 'radioactivity' (noun). In news reports, 'radioactive material' is a frequent collocation.
常見錯誤
3. used in medical words that refer specifically to the element radium or to X-ray
鐳；X光
與鐳元素或X射線診療有關的
used in medical words that refer specifically to the element radium or to X-ray technology as a clinical tool for diagnosing and treating illness
Hugo attended ten sessions of radiotherapy after the operation on his lung.
Hugo 在肺部手術後接受了十次放射治療。
compound: radiotherapy
The radiologist examined the X-ray images and marked a small shadow near the rib.
放射科醫師檢查了X光片，並在肋骨附近標記了一處小陰影。
compound: radiologist
Modern radiology can detect bone fractures that older machines would have missed completely.
現代放射學能夠檢測出舊機器完全遺漏的骨折。
The radiographer asked Talia to hold her breath while the scan was running.
放射技師請 Talia 在掃描進行時憋住呼吸。
文法句型
radi- + noun (e.g., radiotherapy, radiology, radiography)
用法筆記
This sense is used specifically in medical and clinical contexts involving the element radium or X-ray imaging and treatment. Unlike sense 1 (RADIANT ENERGY / RADIATION), which covers the general physical phenomenon of energy emission, sense 3 is limited to concrete applications of radium and X-ray technology in healthcare settings.
4. used in words relating to the technology of sending and receiving sound or signa
無線電
與無線電或無線電通訊有關的
used in words relating to the technology of sending and receiving sound or signals through the air using electromagnetic waves
Kenji switched on the car radio and listened to the morning traffic report.
Kenji 打開車上的收音機，收聽早上的交通報導。
compound: radio (simplified form of radiogram)
The ship sent a radiogram asking for urgent medical help during the storm.
船隻在暴風雨中發送了一封無線電報，請求緊急醫療援助。
compound: radiogram
Anna uses a small radio transmitter to talk to other hikers on the mountain trail.
Anna 使用一台小型無線電發射器，在登山步道上與其他健行者通話。
Radio waves carry music and news across the whole country day and night.
無線電波日夜不停地將音樂與新聞傳送到全國各地。
文法句型
radi- + noun (e.g., radio, radiogram, radiowave)
用法筆記
The word 'radio' itself is the most common form of this combining form. 'Radio' is so frequently used that most learners do not recognise it as containing a prefix.
常見錯誤
5. used in medical words relating to the radius, which is the shorter bone on the t
橈骨
與前臂橈骨有關的
used in medical words relating to the radius, which is the shorter bone on the thumb side of the lower arm that connects the elbow to the wrist
The radiocarpal joint connects the radius bone to the bones of the wrist.
橈腕關節連接橈骨與手腕的骨骼。
compound: radiocarpal joint
A fracture of the radial head near the elbow makes turning the forearm painful.
靠近手肘的橈骨頭骨折會導致前臂轉動時感到疼痛。
compound: radial head (adjective form)
The surgeon repaired the torn ligament in Luca's radioulnar joint after the accident.
外科醫師在事故後修復了 Luca 受損的橈尺關節韌帶。
Soraya learned about the structure of the radius and ulna during her anatomy class.
Soraya 在解剖課上學習了橈骨與尺骨的結構。
文法句型
radi- + noun (e.g., radiocarpal)
用法筆記
This sense is limited to medical and anatomical vocabulary. The noun 'radius' (the actual bone) is more common than compounds like 'radiocarpal'.