let alone

不干涉；更不用说

leonine, leopard, leopardess, leotard, leper, leprechaun, leprosy, lesbian, lesbianism, lese-majeste (also lese-majesty), lesion, less, lessee, lessen, lessening, lesser, lesson, lessor, lest, let, let down, let go, let go (of), let go of, let in, let loose, let off, let on (about sth/that...) (to sb), let oneself go, let out, let pass, let sb off (with sth), let sb out, let sb through, let sb. in, let sb. into, let sb. out, let slide, let sth in, let sth into sth,