We no longer manufacture pure cotton shirts as their retail prices tend only to attract that upper end of the market.
我方已不再生产纯棉衬衫因为其零售价格只能吸引高档消费者。
Finding planets is proving hard enough, but finding life on them will prove infinitely more difficult.
寻找行星证明相当困难,但是要在行星上发现生命会变得无比艰难。