duty period的相关资料：
近反义词
【近义词】
- shift 移动
- work shift 工作班次
临近单词
duty pass
duty
duty roster for emergency relief
duty-free access to the market
Duty Status-Whereabouts Unknown
duty-cycle dynamic distribution
duty chemist/officer/doctor
duty fight infringement liability
duty exemption of contract breaking
Duty Involving Submarine Operations
duty of performing military service
duty qualified independent inspector
