Ecogenesis
生态种的发生, 生态史, 生态进化
🗣️ 情景例句
It's going to be a piece of cake.
这种事不费吹灰之力。
I can only afford to watch television for an hour gonight because I have homework to do.
因为我要做家庭作业，所以今晚我只能花一小时看电视。
Thanks very much.
非常感谢。