One-piece means something is made as a single thing, not as parts you join or take apart. A one-piece swimsuit is the kind that is not a bikini — it covers the body in one piece of clothing. A one-piece dress or a one-piece snowsuit is the same idea: built as one unit, so nothing splits at the waist.

One-piece means的意思是 something東西 is made as a single thing做成單獨一件，not as不是做成 parts you join or take apart可以組起來或拆開的零件。 A one-piece swimsuit連身泳衣 is the kind that is not a bikini就是不是比基尼的那種——it它 in one piece of clothing用一件衣料 covers the body包住身體。 A one-piece dress連身洋裝 or a one-piece snowsuit或連身雪衣 is the same idea是同一個概念：built as one unit做成一個整體，so所以 nothing沒有東西 splits at the waist在腰那裡分開。

The word almost always sits before a noun.

The word這個字 almost always幾乎總是 sits before a noun放在名詞前面。

Though actually, in shops and on the beach, “a one-piece” by itself often means the swimsuit; people drop the word swimsuit because everyone knows. That extra meaning is very common in clothes talk, but a one-piece tool or a one-piece fishing rod is still just “made of one piece.” Compare two-piece (a bikini, or a skirt and jacket) and three-piece (a suit with an extra middle piece).

Though actually不過其實，in shops and on the beach在店裡和海邊，“a one-piece” by itself單獨一個 “a one-piece” often常常 means就是指 the swimsuit那種連身泳衣；people人們 because everyone knows因為大家都懂 drop the word swimsuit就把 swimsuit 這個字省掉。 That extra meaning那個多出來的意思 in clothes talk在聊衣服時 is very common非常普遍，but但 a one-piece tool一件式的工具 or a one-piece fishing rod或一體成型的釣竿 is still just還是只是 “made of one piece”「一體做成」的意思。 Compare比較看看 two-piece（a bikini比基尼，or a skirt and jacket或裙子加外套）and three-piece（a suit with an extra middle piece多一件中間背心的西裝）。