Tetracyanoethylene
四氰乙烯
??? 情景例句
Catching a fish is a lot more complicated than just throwing a worm in the water.
釣魚可不是把魚餌拋進(jìn)水里那么簡單。
Aren't you dressed too formally?
你穿的不是太正式化了嗎？
In five hours' time!
5個(gè)小時(shí)以后！