to continue working even when you are tired or out of energy
继续工作，即使感到疲劳或精力耗尽 (jixu gongzuo, jishi ganjiao pilao huo jingli haojin)
"He’s been running on empty for weeks without a break."
"他已经连续几个星期没有休息，继续工作。" (Ta yi jing lianxu ji ge xingqi meiyou xiuxi, jixu gongzuo)
A sum of money saved for the future or retirement.
to contact someone by writing or message
to avoid laughing in a funny situation
something that makes someone feel very happy or pleased
to aim for something very ambitious
the trace of information left by a user's online activities
