upthrust
/ˈʌpθrʌst/ (bre, ipa) · /ˈʌpθrʌst/ (ame, ipa) · /ˈəp-ˌthrəst/ (ame, mw)
upthrust — 名詞
1. the upward force that a fluid — a liquid or a gas — exerts on any object placed
浮力
流體對物體施加的向上推力
the upward force that a fluid — a liquid or a gas — exerts on any object placed inside it, making the object feel lighter and, if the force is great enough, causing it to float.
The upthrust of the water kept the wooden raft floating on the lake.
水的浮力讓木筏漂浮在湖面上。
upthrust of + [liquid] for physical force
Quan's class measured the upthrust on a rubber duck in a tank of water.
Quan 的班級測量了橡皮鴨在水槽中受到的浮力。
A steel ship floats because the upthrust from the sea equals the ship's weight.
鋼鐵船能漂浮，是因為海水產生的浮力等於船身的重量。
The scuba divers felt the strong upthrust of the seawater pushing them upward.
水肺潛水員感受到海水將他們往上推的強大浮力。
Archimedes discovered the principle of upthrust while taking a bath.
阿基米德在洗澡時發現了浮力原理。
- buoyancy
more common in everyday physics; upthrust is the technical term for the force itself
- buoyant force
the full phrase used in textbooks; upthrust is the shorter synonym
文法句型
the upthrust of + noun (liquid/gas)
upthrust + verb
用法筆記
In physics classrooms this force is also called buoyancy or buoyant force. The simplest demonstration is a block of wood pushed down into water — when released, the upthrust shoots it back to the surface.
常見錯誤
2. the process by which sections of the Earth's crust are pushed upward by forces d
隆起
地殼板塊運動造成的地面抬升
the process by which sections of the Earth's crust are pushed upward by forces deep inside the planet, often creating mountains, plateaus, or cliffs.
The Himalayan mountain range was formed by the upthrust of the Indian tectonic plate.
喜馬拉雅山脈是由印度板塊的隆起所形成的。
upthrust of + [tectonic plate] for geological context
Geologists study the upthrust of rock layers to understand ancient earthquakes.
地質學家研究岩層的隆起，以了解古代地震的成因。
A powerful upthrust of the seabed created a new island near the coast of Japan.
海床的劇烈隆起在日本海岸附近形成了一座新島嶼。
Road builders had to cut through a ridge of upthrust limestone on the mountain pass.
築路工人必須鑿穿山路隘口上一道隆起的石灰岩脊。
- uplift
broader term in geology; upthrust emphasises forceful, sudden vertical movement
- mountain building
a more general phrase; upthrust is one specific mechanism within it
- subsidence
the sinking or downward movement of land, opposite to upthrust
- erosion
wearing away of land that counteracts the effects of upthrust over time
文法句型
the upthrust of + noun (rock/land/crust)
upthrust + verb
用法筆記
Frequently paired with plate tectonics vocabulary: fault line, collision zone, subduction. Geological upthrust happens over millions of years, but earthquake uplift can occur in seconds.
常見錯誤
upthrust — 動詞
- upthrustpresent simple I / you / we / they
- upthrusts3rd person singular
- upthrusting-ing form
- upthrustedpast simple
1. to push or force something suddenly upward from below, often as a result of natu
向上推；舉起
從下方用力將某物往上推
to push or force something suddenly upward from below, often as a result of natural pressure or an explosion.
The earthquake upthrusted a section of the railway track by nearly two metres.
地震將一段鐵路軌道向上推起了將近兩公尺。
upthrust + object + measure phrase
Frozen ground upthrusted the fence posts during the harsh winter.
嚴冬期間，凍結的地面把圍籬樁柱往上推了出來。
The explosion upthrusted debris high into the air above the deserted warehouse.
爆炸將瓦礫高高地拋入廢棄倉庫上方的空中。
Ravindra watched the glacier upthrust huge boulders as it crawled across the valley floor.
Ravindra 看著冰川在緩緩越過谷地時將巨大的岩石往上推。
- push up
the everyday alternative; upthrust sounds formal and literary
- thrust upward
more common verb phrase; upthrust is a compressed version
文法句型
upthrust + noun phrase
用法筆記
Extremely rare in everyday English. In almost all situations native speakers use push up, force up, or thrust upward instead. You are most likely to encounter this sense in geology or engineering writing.
2. to rise or surge powerfully upward, especially when driven by heat, pressure, or
往上衝；湧出
受壓力或熱力驅動而向上猛衝
to rise or surge powerfully upward, especially when driven by heat, pressure, or an explosive force.
A column of steam upthrust from the broken pipe in the factory basement.
一股蒸氣從工廠地下室的破管中往上噴湧而出。
upthrust from + [place] for source of force
Hot lava upthrusts from the volcano before cooling into dark rock.
熾熱的岩漿從火山中往上湧出，然後冷卻成黑色的岩石。
The seabed upthrusts slowly as the tectonic plates push against each other.
隨著板塊相互擠壓，海床正在緩慢地往上隆起。
Superheated gas upthrust through narrow cracks in the desert floor.
過熱的氣體從沙漠地面的狹窄裂縫中往上噴出。
文法句型
upthrust + adverb/preposition
upthrust from + noun
用法筆記
The subject is usually a natural force or substance (lava, steam, gas, magma). Never used with a human subject performing an intentional action.