fissional的音標是["f???n?l]，翻譯成中文是專業性的、專門知識的。

速記技巧是：可以嘗試使用一些速記軟件或技巧，提高記憶效率。

fissionable: 詞源同fission，表示可分裂的。這個詞通常用于描述可以發生核裂變的物質。其變化形式包括fissionable mass（可裂變質量）和fissionable material（可裂變物質）。相關單詞有nuclear power（核能）、nuclear weapons（核武器）、fissionable fuel（可裂變燃料）等。這些單詞都與核能、核武器和核裂變有關，強調了核能的強大和危險性。

fission: 詞源同分裂，表示核裂變的過程。其變化形式包括fission product（裂變產物）和fission fragment（裂變碎片）。相關單詞有atomic fission（原子核裂變）、nuclear fission（核裂變）等。這些單詞描述了核裂變的過程和結果，強調了核裂變在科學和工程領域的重要性。

其他相關單詞包括：

1. fissionable potential（裂變潛能）：描述核裂變可能產生的能量。

2. fission bomb（裂變炸彈）：一種利用核裂變產生巨大爆炸力的武器。

3. fission reactor（裂變反應堆）：一種利用核裂變產生熱能的裝置。

4. fission chain reaction（裂變連鎖反應）：描述核裂變過程中一系列反應的連鎖效應。

5. fission neutron（裂變中子）：描述參與核裂變的粒子。

6. fission track（裂變軌跡）：描述核裂變過程中產生的微觀痕跡。

7. fission-fusion cycle（裂變-融合循環）：一種用于發電的核能循環系統。

8. fission-capable material（可裂物質）：具有核裂變能力的物質。

9. fission-fusion physics（裂變-融合物理學）：研究核裂變和融合的物理學分支。

10. fission-fusion technology（裂變-融合技術）：利用核裂變和融合技術進行能源開發和應用的技術。

常用短語：

1. break down

例句：The car broke down on the way.

2. come up

例句：He suddenly came up with an idea.

3. get along

例句：We are getting along well with each other.

4. make up

例句：She made up her mind to do it.

5. set off

例句：Let"s set off for the party.

6. take off

例句：He took off his jacket and sat down.

7. put up

例句：Please put up your hand if you have any questions.

英文小作文：

Fission is a process that converts one type of atom into another type of atom, usually through the use of nuclear energy. This process can be used for various purposes, such as creating new materials, generating electricity, and studying the properties of atoms. In addition, fission has also been used in weapons such as nuclear bombs, which pose a potential threat to human life and the environment. However, fission has also been used for peaceful purposes, such as power generation and research, and it is essential to ensure that it is safely and responsibly used in the future.