虽然很贵，但它在世界各地都很畅销。
Although it is very expensive, it sells well around the world.
国际长途电话虽然很贵，可是他一打就是十分钟。
Although international long distance calls are very expensive, once he makes a call it will last for several tens of minutes.
空运虽然很贵但很快，当考虑到速度这个方案将更有效，食品和一些紧急物品通常用空运交货。
Air freight is quick although it is expensive. When speed is taken into consideration, this method will be more effective. Food and some urgently needed goods are usually delivered by air freight.
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