A drummer is someone who plays drums. In a band, the drummer keeps time so the others can stay together. The word is ordinary and used everywhere people talk about music.

a drummer就是 someone who plays drums打鼓的人。in a band在樂團裡，the drummer keeps time鼓手負責打拍子，so the others can stay together讓其他人可以合在一起。the word這個字 is ordinary and used everywhere people talk about music很普通，大家講音樂的時候到處都會用。

Though actually, in older American English a drummer could also mean a travelling seller who went from town to town — from the idea of “drumming up” business, making noise to get people to buy. That use is dated now.

though actually不過事實上，in older American English早期的美式英文裡 a drummer could also mean a travelling seller who went from town to town也可以指到處跑城鎮的行商——from the idea of “drumming up” business這是從「drumming up」business（敲鑼打鼓招攬生意）的概念來的，making noise to get people to buy就是弄出聲響讓人來買東西。that use這種用法 is dated now現在已經過時了。

There is still another, separate older use in Australian English, from drum meaning “house,” but that is not the musician. If you meet drummer in a song, a concert, or a school band, it is the person at the drums.

another, separate older use另外還有一個獨立的舊用法 in Australian English在澳式英文裡，from drum meaning “house,”是從 drum 這個字有「房子」的意思來的，but that is not the musician但那不是指樂手。if you meet drummer in a song, a concert, or a school band如果你在歌曲、演唱會或學校樂隊裡看到 drummer，it is the person at the drums指的就是打鼓的那個人。