qt is the short written form of quart, or quarts. A quart is a unit for measuring liquid (and sometimes dry food), used in the United States and, in an older way, in Britain.

qt qt is the short written form是縮寫的寫法， of quart, or quarts用來寫 quart（夸脫）或它的複數。A quart一夸脫 is a unit for measuring liquid是測量液體的單位 (and sometimes dry food),（有時候也用來量乾的食物）， used in the United States在美國使用， and, in an older way, in Britain而在英國則是比較舊式的用法。

On a recipe or a bottle you may see 2 qt, meaning two quarts.

On a recipe or a bottle在食譜或瓶子上 you may see 2 qt,你可能會看到 2 qt， meaning two quarts意思是兩夸脫。

Though actually, a US quart and an old British (imperial) quart are not the same size: the US one is a little under a litre, the imperial one is a little over.

Though actually,不過實際上， a US quart and an old British (imperial) quart美制夸脫和舊式英制（imperial）夸脫 are not the same size:大小並不一樣： the US one美制的 is a little under a litre,比一公升稍微少一點， the imperial one英制的 is a little over則稍微多一點。

In Taiwan you will mostly meet litres, so this is a reading word for American recipes and labels, not a word you need to say. There is a completely different qt in the phrase on the q.t., meaning “secretly” — that is not this word.

In Taiwan在台灣 you will mostly meet litres,你大部分會遇到的是公升， so this is a reading word所以這是一個用來「看懂」的字， for American recipes and labels,用在美式食譜和標籤上， not a word you need to say不是你需要開口說的字。There is a completely different qt還有一個完全不同的 qt in the phrase on the q.t.,出現在 on the q.t. 這個片語裡， meaning "secretly"意思是「偷偷地」 — that is not this word——那不是這個字。