to的同音词有too、two
例句
1.
The number of new students decreased from 210 to 160 this year.
今年新生人数从210减少到160。
2.
The treatment should be repeated every two to three hours.
这种治疗方法应该每隔两到三小时重复一次。
3.
I don't think you realize how important this is to her.
我认为你没有意识到这对她是多么重要。
