Matériel is the equipment an army needs to fight: weapons, ammunition, vehicles, fuel, radios, spare parts. It is a specialist military word, and it exists for one reason — to draw a line between the things and the people. Military planners split what an army has into personnel (the soldiers) and matériel (everything else). So you meet it in defence reports, news about arms shipments, and military history: 'losses of men and matériel', 'the movement of troops and matériel'. It is uncountable, and it takes a singular verb. Note the accent: matériel, with an é, and often printed in italics because English still treats it as a foreign word — though you will also see it written 'materiel' with no accent, which is fine. Say it roughly ma-TEER-ee-EL, with the last part stressed, French-style. Two cautions. First, it is not the same as the everyday word 'material', even though they were the same word once; you cannot use matériel for cloth or for building supplies. Second, it belongs to military writing, so it will sound strange in a sentence about your office supplies.

軍需物資、軍備（武器、彈藥、車輛等）。軍事報導專用詞，跟 personnel（人員）成對出現：一個講「人」，一個講「東西」。不要跟一般的 material（材料、布料）混用。