let loose
  鬆手,放開;不拘束,放縱,散開;放出,釋放
  let loose
       v 1: express audibly; utter sounds (not necessarily words); "She
            let out a big heavy sigh"; "He uttered strange sounds
            that nobody could understand" [syn: utter, emit, let
            out]
       2: turn loose or free from restraint; "let loose mines"; "Loose
          terrible plagues upon humanity" [syn: unleash, loose]