| 单词 | second-in-command | 
| 释义 | second-in-command also second in command singular noun A second-in-command is someone who is next in rank to the leader of a group, and who has authority to give orders when the leader is not there.  He was posted to Hong Kong as second-in-command of C Squadron.  The President was replaced by his second-in-command. Synonyms: deputy, assistant, subordinate, understudy More Synonyms of second-in-command second-in-command in British English (ˌsɛkəndɪnkəˈmɑːnd) noun 1.  military  an officer who is next in rank to a commanding officer  He was posted to Hong Kong as second-in-command of C Squadron. 2.  government  a deputy  The President was replaced by his second-in-command. Examples of 'second-in-command' in a sentence | 
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