Full-size means the ordinary largest size of that thing — not a toy, not a mini version, not a compact one. A full-size car is not a tiny city car; a full-size guitar is not a travel one; a full-size replica is as big as the real object. It is everyday and a little technical, the kind of word shops and reviews use.

Full-size means指的是 that thing那樣東西 the ordinary largest size一般情況下最大的尺寸——not a toy不是玩具、not a mini version不是迷你版、not a compact one也不是小型款。A full-size car全尺寸的車 is not不是 a tiny city car小小的都會車；a full-size guitar全尺寸吉他 is not不是 a travel one旅行款；a full-size replica全尺寸複製品 the real object跟實物 is as big as一樣大。It它 is everyday是日常用語 and a little technical又帶點技術味，shops and reviews商店和評測 use會用的 the kind of word那種詞。

Though actually, it does not always mean “the biggest thing that exists.” In American shops, a full-size bed is a named mattress size, smaller than queen. So full-size often means “the standard proper size,” not “the maximum possible.” You will also see full-sized with a -d; same idea.

Though actually不過其實，it does not always mean它不一定總是指 “the biggest thing that exists.”「世界上存在的最大那種」。In American shops在美國的商店裡，a full-size bed is是 a named mattress size一種有名字的床墊尺寸，than queen比 queen smaller小。So所以 full-size often means常常指 “the standard proper size,”「標準的正常尺寸」，not而不是 “the maximum possible.”「可能的最大值」。You will also see你也會看到 with a -d帶 -d 的 full-sized；same idea同一個意思。