Epigenotype
后生型, 总发育体系
🗣️ 情景例句
I had never been there before.
我以前从来没有去过那里 。
Please make yourself at home.
请随意一点。
Affluent he may be, but he is by no means sure what, to tip the doorman or the chambermaid.
他们可能很富有，但给看门人和房间女服务员多少小费，心中却根本没有数；