put [sth.] to (good) use vs. put [sth.] into use/service

put [sth.] to (good) use vs. put [sth.] into use/service

辨析：两者都有“使用”的含义。但前者强调在某个特定环境下尽到了事物或能力的功用，后者则强调自某个特定时间段“投入使用”。

例句：
Since you have a good password, put it to use by logging off when you go to lunch.
I hope that they are able to put the elevator into service again soon.