A combination lock, a travel alarm clock, nail clippers, spare batteries for the camera and a bit of laundry soap are always needed, regardless of your destination.

无论你去哪，一个密码锁，一个旅游闹钟，指甲刀，相机的备用电池以及一些洗衣香皂，总是不可或缺的。

youdao

His duty is to lock all the doors after 11 o 'clock every night.

他的职责是每晚11点后把所有的门都锁上。

youdao

When the phase and frequency of the reference and feedback clock signals are the same, the PLL is in lock mode, and the PFD does not generate pulses in its output signals.

当基准和反馈时钟信号的相位和频率相同时，PLL处于锁定模式，且PFD输出信号中不生成脉冲。

youdao

It is also operating a round-the-clock "lock door policy".

BBC: Rox in George Street in Edinburgh

The basic reality of American prisons is not that of the lock and key but that of the lock and clock.

NEWYORKER: The Caging of America

It builds on the standard kidnapping and ransom policy by bringing in consultants to train crews in security, prepare emergency safe rooms where crews can lock themselves in until a hijacked ship can be retaken, and provide round-the-clock advice to captains on safe routes to take.

FORBES