1along
2to follow (a line, tradition etc)
3to carry on
4to trim (a border with braid, tape etc)
5border
6edge
Examples
bàng wǎn傍晚wǒ我xǐ huan喜欢yán沿zhù著hú湖biān边sàn bù散步。
傍晚我喜欢沿着湖边散步。
At nightfall I like to take a walk along the lakeside.
这条小路沿着河走。
This path follows the river.
泪水沿着爱丽丝的脸颊流下来。
Tears ran down Alice's cheeks.