不定: indefinite; indeterminate航船: boat that plies regularly be ...不定航线船: contract carrier; to-anywhere ship不定航线货船: tramp不定航线运输: tramping不定航线干货船: dry cargo tramp不定航线通用货船: general purpose tramp不定航线远洋货船: ocean tramp不定期航船货运指数: index of tramp shipping freights航船: boat that plies [sails] regularly between inland towns; steamer; steamship不定: 1.(表示不肯定) indefinite; indeterminate 我明天还不定来不来呢。 it's not at all certain whether i'll come tomorrow. 他一天不定来多少次。 i don't know how many times he comes a day. 事情还不定怎样呢。 it's hard to predict how things will turn out.2.(不稳定) unsteady; drifting; fitful 方向不定的风 a fitful wind; 漂泊不定 drifting from place to place; 心神不定 unsteady in mind; 不定代词 [语言学] indefinite article; 不定冠词 [语言学] indefinite article; 不定式 [数学] indeterminate form; [语言学] infinitive; 不定收入 transitory income导航船: leading ship返航船: homeward ship; homeward-bound ship; homeward-bounder护航船: consort; convoying ship; escort boat; escort ship; escort vessel; escorting vessel领航船: pilot boat试航船: trial ship停航船: laid-uvessel外航船: outbound ship; outward bounder; outward-bound ship巡航船: cruise industry夜航船: night vessel引航船: lode ship; pilot boat; pilot cutter; pilot ship; pilot vessel; pilotboat; pilotcutter; pilotvessel远航船: foreign-going vessel在航船: vessel underway直航船: privileged ship; right of way vessel; standon vessel自航船: self-propelled ship; self-propelled vessel