Genepistasis
进化静止说
🗣️ 情景例句
Do you want a first class, business class or economy seat?
你想要头等舱、商务舱还是经济舱？
Do I need a reservation for the dining car?
我需要预订餐车吗？
I had a wonderful time here.
我在这里度过了难忘的时光。