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1·The trug was of no effect.

这药无效。《新英汉大辞典》

2·Our company specializes in research & development, producing and selling automobile parts, such as door panel assembly , interior trim components pillar , package trug and air inlet grill .

公司主要从事汽车门板总成，落水槽，立柱等汽车零部件的研发、生产和销售。