Exosymbiosis
外共生(现象)
🗣️ 情景例句
or Mom is at a committee meeting.
就是妈妈参加小组会议。
Slowly, mountains are worn away by the wind.
山体逐渐被风化了。
Right from the start there was trouble with the Hubble.
从最开始哈勃望远镜就有问题。