Question

infantry 【INFANTRY】Men in the infantry often march long distance.步兵常做长途行军。【重点词汇】infantry n. 步兵

Accepted Answer

['ɪnfəntri] 
infantryan army unit consisting of soldiers who fight on foot
Armies usually contain different divisions for different purposes. For example, soldiers on horseback belong to the Cavalry, those who work in communications are in the Signal Corps, and soldiers specially trained to fight on foot are members of the Infantry.
It seems somewhat strange to have the word "infant" in a word that refers to a fighting military unit, but the word infantry once referred to the foot soldiers who were too young or too inexperienced to qualify for the cavalry. The word was taken from the Latin word for a youth, infantem, and so evolved into infantry after working its way through the Spanish, Italian, and French, appearing in English in the late 16th Century.
All forms of 'infantry' will appear on average once every 288 pages.infantry

Front	infantry
Pron	['ɪnfəntri]
Back	【INFANTRY】 Men in the infantry often march long distance. 步兵常做长途行军。【重点词汇】 infantry n. 步兵
Vocab	infantryan army unit consisting of soldiers who fight on foot Armies usually contain different divisions for different purposes. For example, soldiers on horseback belong to the Cavalry, those who work in communications are in the Signal Corps, and soldiers specially trained to fight on foot are members of the Infantry. It seems somewhat strange to have the word "infant" in a word that refers to a fighting military unit, but the word infantry once referred to the foot soldiers who were too young or too inexperienced to qualify for the cavalry. The word was taken from the Latin word for a youth, infantem, and so evolved into infantry after working its way through the Spanish, Italian, and French, appearing in English in the late 16th Century. All forms of 'infantry' will appear on average once every 288 pages. infantry

Infantry Word Soldiers Foot Fight ɪnfəntri Men March