Dichromate
n. 重鉻酸鹽\\n[化] 重鉻酸鹽(或酯)
? 同義詞
??? 情景例句
Lacks vitality.
缺乏活力。
Would you please give us a rough idea of the quantity you require?
請告知你方大概要訂多少？
and content in the thought that what was possible has been done.
想到能做的事都做了，也就坦然了。