Definition: fixed and never changing Level: C2
她的合同规定，她每周工作固定的小时数。
In her contract, she works a ___set number of hours each week.
他每天早晨都雷打不动地遵循固定的作息。
He follows a ___set morning routine without fail.
图书馆有固定的晚上10点闭馆时间。
The library has a ___set closing time of 10 PM.
