Don't dawdle away your time.

不要混日子。

youdao

Don't dawdle away your time, or the young head will soon turn white. Then it will be in vain for you to moan and mourn for this.

不要浪费你的时间，不然你的头发会变白。你将会虚度光阴并且为之后悔。

youdao

Be not allowed to have denied that he is really not a all-round vanguard of technology now, but time for 4 years is enough for him to dawdle away tempering self with fire.

不可否认，他现在并不是一个技术全面的前锋，但四年的时间足够他磨炼自己的了。

youdao