A sailing boat with three hulls: one main hull in the middle and a smaller float on each side. The two outer floats keep it from tipping over, so a trimaran can carry a big sail and go very fast without needing heavy weight underneath like an ordinary yacht. It is also steady and roomy, which is why you see them used for racing and for long ocean crossings.

Trimaran是a sailing boat with three hulls一種有三個船身的帆船：one main hull in the middle中間一個主船身，and a smaller float on each side兩側各有一個較小的浮體。The two outer floats這兩個外側浮體keep it from tipping over能讓船不容易翻，so所以a trimaran can carry a big sail三體船可以掛很大的帆，and go very fast跑得很快，without needing heavy weight underneath like an ordinary yacht不需要像一般遊艇那樣在底下加重物。It is它也steady and roomy很穩、空間又大，which is why你see（看到）them used（人們用它）for racing用來比賽and for long ocean crossings以及長程跨洋航行。

Compare catamaran, which has two hulls — that is the far more common word, and the one the ferry you take is likely to be. The three-hulled kind is rarer, so trimaran mostly appears in sailing talk, boat shows and news about record-breaking voyages.

Compare跟catamaran雙體船catamaran比較一下，which has two hulls它有兩個船身——that is the far more common word這個詞遠比較常見，and the one the ferry you take is likely to be而你搭的渡輪多半就是它。The three-hulled kind三體船這種is rarer比較少見，so所以trimaran mostly appears in sailing talk trimaran這個詞多半出現在帆船圈的討論裡、boat shows船展and news about record-breaking voyages以及破紀錄航行的新聞裡。

Countable noun: a trimaran, two trimarans. Say it TRY-muh-ran.

Countable noun可數名詞：a trimaran一艦trimaran、two trimarans兩艦trimarans。Say it唱法是TRY-muh-ranTRY-muh-ran。