滑雪者在选择购买保险的问题上应该尤其慎重。Skiers should be particularly choosy about the insurance policy they buy.经过慎重考虑，我决定结束我的婚姻。After much thought I decided to end my marriage.但要慎重：这个选择代价不菲。But be warned: this is not a cheap option....
Invertase can exist as active monomer ( light invertase ) or as an aggregated active form ( heavy invertase ).转化酶可以活性单体 ( 轻转化酶 ) 或聚集的活性形式 ( 重转化酶 ) 存在.There exist complete cross - incompatibility and also partial incompat...
我们翻看他们的八卦时带着不洁的想法。We read the gossip written about them with prurient interest.店里的一些地方十分肮脏不洁，简直就是滋生细菌的理想温床。Parts of the shop were very dirty, unhygienic, and an ideal breeding ground for bacteria.伤口不洁可受感染.A dirty cut may...