针对他们各人不同的需要挑选柔软、软硬适中或者坚硬的床垫。Choose a soft, medium or firm mattress to suit their individual needs.这个铺位的床垫很硬，毯子也很扎人，而且还有点潮。The bunk mattress was hard, the blankets prickly and slightly damp.通常床垫和床架是成套购买的。The mattress and ...
这则古老的寓言流传了数个世纪。The old fable continues to echo down the centuries.那个岛上的居民忍受了数个世纪的剥削。The islanders endured centuries of exploitation.这个钟楼很大,可以容纳得下数个大钟.The tower is large enough for the reception of several bells....