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
Okay. Thank you.
好的，谢谢。
Speak well of your friend, of your enemy say nothing.
要赞美朋友，莫提及敌人。
He could not find his fifty pence piece anywhere, and what is more,
但他摸了半天也没找到那50便士硬币，