by中文是什么意思

by英音：[bai]美音：[baɪ]

介词 prep.
1.被,由
The homework was assigned by the teacher.
这些家庭作业是老师布置的。
2.靠,用,通过
They crossed the river by ferry.
他们乘渡船过了河。
3.经由;沿