倒数口令的英文

• countdown

• 倒数:    reciprocal
• 口令:    word of command; password
• 倒数:    [数学] reciprocal
• 口令:    1.(口头命令) word of command; word; command; shibboleth 我们等待你的口令。 we await your command.2.(识别敌我的口头暗号) password; watchword; countersign; shibboleth 口令问答 challenge and reply; 你必须说出口令才能通行。 you must give the word before you can pass. 他不知道口令。 he did not know the watchword. 我们说出口令, 哨兵就把我们放过去了。 we gave the watchword, and the sentinel let us pass
• 数口之家:    a family consisting of several persons [members]; a family of several mouths