by/baɪ/
prep.1. 在近处；在旁边standing by the window站在窗户旁边
a table by the bed床边的桌子
2. 经；由；从to enter by the door由门进去
3. 经过…旁He walked by me.他从我旁边走过。
4. 不迟于By tomorrow he'll be here.他明天就到这儿。
5. 被；由written by Shakespeare莎士比亚写的
6. 根据；按照to play by the rules按规则比赛
7. 相差His horse won by a nose.他的马以一鼻之差取胜。
8. 以…方式She earned money by writing.她靠写作挣钱。
We went by air.我们乘飞机走。
9. 表示相（乘）除（以计算面积）a room 15 feet by 20 feet一间长20英尺宽15英尺的房间
to divide X by Y用Y除X
10. 逐一；连续The animals went in 2 by 2.动物两个两个地走进去。
11. （指动物）由…所生