🗣️ 情景例句
She's still giving the toughest English history exams
她仍用最艰深的英国史试题考学生
I'm too worried.
我太担心。
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。