🗣️ 情景例句
He cancelled his appointment.
他取消约会了。
Do you know when he will be back?
你知道他什么时候会回来？
Only the Earth provides ideal conditions, and even here it has taken more than four billion years for plant and animal life to evolve.
只有地球提供理想的条件，而即使在这里，植物和动物的进化也用了40亿年的时间。