fission
fission — 名詞
1. In physics, a reaction where an atomic core splits into two smaller pieces and g
核分裂
原子核分裂釋放巨大能量
In physics, a reaction where an atomic core splits into two smaller pieces and gives off a powerful burst of energy.
Nuclear fission is used in power plants around the world to generate electricity.
世界各地的核電廠都利用核分裂來發電。
collocation: nuclear fission
When a uranium atom undergoes fission, the heat released can turn water into steam.
當鈾原子發生核分裂時，釋放的熱能可以把水變成蒸汽。
undergoes fission
The discovery of nuclear fission in 1938 changed the way scientists think about energy.
1938 年核分裂的發現，改變了科學家對能源的看法。
Hari explained to the class how a single fission event can set off a chain reaction.
Hari 向全班解釋一個核分裂事件如何引發連鎖反應。
Putri's research project focuses on making fission reactors safer and more efficient.
Putri 的研究計畫聚焦於讓核分裂反應爐更安全、更有效率。
- splitting
more general term; fission is a specific type of nuclear splitting
- disintegration
implies complete breakdown; fission produces two main fragments, not many small pieces
- fusion
the joining of atomic nuclei instead of splitting them
文法句型
nuclear fission
undergo fission
fission of + noun
用法筆記
The most common association is with nuclear energy; 'fission' in everyday news almost always refers to nuclear fission rather than the biological sense.
常見錯誤
2. In biology, a type of reproduction where a living cell divides to create new org
分裂生殖
細胞分裂形成新個體的生殖方式
In biology, a type of reproduction where a living cell divides to create new organisms from a single starting cell.
Bacteria can multiply very quickly through a simple process called binary fission.
細菌透過稱為「二元分裂」的簡單分裂生殖過程快速繁殖。
binary fission
Lukas watched under the microscope as a single amoeba split into two by fission.
Lukas 在顯微鏡下觀察到單一變形蟲透過分裂生殖變成兩個。
split into two by fission
Some types of algae use fission to produce thousands of new cells in just a few hours.
某些藻類利用分裂生殖在短短幾小時內產生數千個新細胞。
Sade's biology notes compare fission in bacteria with the cell cycle in humans.
Sade 的生物筆記比較了細菌的分裂生殖與人類的細胞週期。
In simple organisms, fission acts as the main way to create offspring without a partner.
在簡單生物中，分裂生殖是無需伴侶就能產生後代的主要方式。
- fusion
in cell biology, fusion is the joining of cells (e.g., during fertilization)
文法句型
binary fission
fission of + cell/organism
by fission
用法筆記
When describing reproduction, 'binary fission' (splitting into two) is the most common subtype. Distinguish from 'mitosis', which produces two identical nuclei but is part of a larger cell cycle involving multiple stages.
常見錯誤
fission — 動詞
- fissionpresent simple I / you / we / they
- fissions3rd person singular
- fissioning-ing form
- fissionedpast simple
1. When an atom's nucleus or a living cell splits apart from within through nuclear
發生分裂
原子或細胞自行分裂
When an atom's nucleus or a living cell splits apart from within through nuclear or biological division, without being forced by an outside cause.
When the nucleus fissions, it releases both energy and free neutrons.
原子核發生分裂時，會釋放出能量與自由中子。
nucleus fissions
Under the right conditions, the cell fissions into two identical daughter cells.
在適當條件下，這個細胞會分裂成兩個相同的子細胞。
fissions into [number] [cells]
James watched as the uranium atom fissioned after absorbing a single neutron.
James 觀察到那顆鈾原子在吸收一個中子後發生分裂。
As the colony of bacteria grows, each organism fissions when it reaches a certain size.
隨著細菌群落生長，每個個體長到一定大小時就會發生分裂。
文法句型
[atom/cell] fissions
[atom/cell] fissions into [parts]
用法筆記
Frequently used in scientific writing rather than everyday speech. The past form 'fissioned' is regular.
2. To force an atom's nucleus or a living cell to split apart through nuclear or bi
使分裂
使原子核或細胞進行分裂
To force an atom's nucleus or a living cell to split apart through nuclear or biological division, by applying energy or reacting with it.
The reactor fissions uranium atoms to produce heat for the power plant.
反應爐使鈾原子分裂，為發電廠產生熱能。
reactor fissions [element] atoms
A single neutron can fission one uranium nucleus and trigger more neutrons.
單一中子可以使一個鈾原子核分裂，並釋放出更多中子。
Gabriel's team is studying how to fission certain elements more efficiently.
Gabriel 的團隊正在研究如何更有效率地使某些元素分裂。
Omar adjusted the machine so that it fissioned the sample at the right temperature.
Omar 調整了機器，使它在適當溫度下讓樣本發生分裂。
- split
the everyday alternative; 'split an atom' is more understood by general readers
- fuse
to join atoms together, the opposite of splitting them
文法句型
fission [atom/nucleus/cell]
[device] fissions [substance]
用法筆記
Very rare in everyday language. The object is typically a nuclear fuel like uranium or plutonium.