up lock and down lock switch及: reach; come up to下: below; down; under; undernea ...锁: lock电门: switch way; method; access上锁开锁电门: cage-uncage switch下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:上锁及下锁电门，即可在微信中查询翻译
