A tuba is the big brass instrument at the back of the band — a wide coiled tube ending in a large bell that points up at the sky. You blow into it with your lips buzzing against a cup-shaped mouthpiece, and it gives out the lowest sounds in the brass family, the deep notes you feel in your chest more than you hear.

A tuba is the big brass instrument at the back of the bandTuba（低音號）是樂團後排那個又大又粗的銅管樂器 a wide coiled tube ending in a large bell that points up at the sky一根寬寬的、繞成圈的管子，末端接著一個朝天空張開的大喇叭口 You blow into it with your lips buzzing against a cup-shaped mouthpiece你用嘴唇貼著杯狀吹嘴振動來吹奏它 and it gives out the lowest sounds in the brass family它發出的是銅管樂器裡最低沉的聲音 the deep notes you feel in your chest more than you hear那種低音你用胸口感覺到的，比用耳朵聽到的還多

It is heavy: a player usually sits with it resting on their lap, and marching bands often use a shoulder-worn version called a sousaphone instead. In an orchestra there is normally only one, and it holds the bottom of the sound while the others sit above it.

It is heavy它很重 a player usually sits with it resting on their lap演奏的人通常會讓它靠著大腿撐著坐著吹 and marching bands often use a shoulder-worn version called a sousaphone instead行進樂隊則常常改用一種扛在肩上的版本，叫做sousaphone（蘇沙號） In an orchestra there is normally only one在管弦樂團裡通常只有一支 and it holds the bottom of the sound while the others sit above it它撐住整個聲音的最底層，其他樂器則在它上面

In everyday English the tuba has a slight comic shadow — cartoons use its low 'oom-pah' for something large and slow-moving, and people joke about the poor student who has to carry one home. Players are quick to say this is unfair; a tuba in good hands is warm and surprisingly gentle.

In everyday English the tuba has a slight comic shadow在日常英文裡，tuba帶著一點滑稽的形象 cartoons use its low 'oom-pah' for something large and slow-moving卡通會用它低沉的'oom-pah'來配笨重、慢吞吞的東西 and people joke about the poor student who has to carry one home大家也會拿要扛它回家的可憐學生開玩笑 Players are quick to say this is unfair演奏者很快就會反駁說這不公平 a tuba in good hands is warm and surprisingly gentle一支在好手裡的tuba其實溫暖，而且出乎意料地柔和

The person who plays it is a 'tuba player' or, more formally, a 'tubist'. The plural is 'tubas' (you may see 'tubae' in old music writing, but nobody says it).

The person who plays it is a 'tuba player'演奏它的人叫做'tuba player' or, more formally, a 'tubist'或者比較正式地說是'tubist' The plural is 'tubas'複數形是'tubas' (you may see 'tubae' in old music writing, but nobody says it)（你可能會在老式的音樂文獻裡看到'tubae'，但沒有人真的這樣說）