Fast neutron
[电] 速中子
🧩 词语组成解析
fast
[fæst]
adj. 快的;走得快;感光快的;紧的;
adv. （比准确的时间或宣布的时间）快;迅速地;紧紧地;彻底地;
vi. 禁食，（尤指）斋戒;
n. 禁食期，斋戒期;断食，节食;
🗣️ 情景例句
Can I buy travelers checks here?
这儿能买旅行支票吗？
An honest man's word is as good as his bond.
诚实人的话像他的契约一样靠得住。
It has to be tall because it is like a giant block and tackle,
井架必须很高，因为它像一个巨型滑轮组。