stick to sth.简单

sticks to an out-of-date order.

坚持一项过时的命令。

Whichever approach, the key is to determine your length of focus time and stick to it.

无论采用哪种方法，关键都在于确定你专注时间的长度并坚持下去。

Stick to what you need

只买你需要的

it's safer to stick to the traditional rules.

坚持传统规则更安全。