/ˈtrebl ||; ˈtrɛbḷ/verb [I,T] to become or to make sth three times bigger (使)成为三倍,提高两倍: Prices have trebled in the past ten years.过去十年内物价提高了两倍。 trebledetThis figure is treble the number five years ago.这个数字是五年前的三倍。
treble²
/ˈtrebl ||; ˈtrɛbḷ/noun[C]
1 a high singing voice, especially that of a young boy 最高音(尤指男童的)