Ecogenesis
生态种的发生, 生态史, 生态进化
🗣️ 情景例句
If you don't apply to the relevant department your passport will never be approved.
如果你不向有关部门申请，你就得不到护照。
If he doesn't, will you buy one?
如果他不，你会买一个吗？
It's been open for several years.
它建成已有好几年了。