Ammonation
氨合作用
🗣️ 情景例句
Here I am.
我在这儿！
I think the teacher works us too hard.
我觉得教师害得我们太苦了。
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。