Polygenom
多染色体组
🗣️ 情景例句
Who's this?
你是谁？
Who told you?
谁告诉你的？
If there had not been a hard layer of rock beneath the soil, they would have completed the job in a few hours.
如果不是因为土壤下面有一层坚硬的岩石，他们的营救工作仅用几个小时就可以完成了。