请把行李票的第二联贴在行李上。
Please stick the second copy of your tickets on each piece of luggage.
三联治疗与二联治疗相比并未改善预后。
Triple combinations of these drugs did not improve the results obtained with double combinations.
二联式公寓：占两层楼，楼层间由内部楼梯相联的公寓。
Duplex apartment: an apartment having rooms on two adjoining floors connected by an inner staircase.
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