Sra
abbr. sulforicinucleic acid 硫銅酸
??? 情景例句
We haven't had any more news from the frontier, so we'll just have to be patiend.
我們還沒得到來自前方的進一步消息，所以我們只有耐心等待。
It was not until the accident happened that I became aware of my own foolishness.
直到事故發生我才意識到我自己的愚蠢。
We'd better not just talk; let's go to the river to bathe.
我們最好別光顧說了；咱們去河里游泳吧。