门联锁：起动与馈电回路的门机械联锁以避免在装置通电的情况下开门。
Door Interlocking: starter and feeder doors mechanically interlocked so doors cannot be opened with unit energized;
银行星期五下午关门，直到星期一早上才会再开门营业。
Banks closed on Friday afternoon and did not open again until Monday morning.
学校早上9点开门，12点下课。在英国，学生们会在学校吃午饭。
In the morning school starts at 9:00 and the classes finish at 12:00. In England, students have lunch at school.
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