Methylamine
高中 Senior High[化] 甲胺\\n[医] 甲胺
🗣️ 情景例句
At this rate,
照这种速度
Happy is he who knows his follies in his youth.
记得青年时所做的愚笨事的人是幸福的。
and so the tools of long ago have remained when even the bones of the men who made them have disappeared without trace.
因此，尽管制造这些工具的人的骨头早已荡然无存，但远古时代的石头工具却保存了下来。