合成了丙烯酸酯封端和马来酸封端两种活性端基液体橡胶,并且用于不饱和聚酯(UP)的增韧.
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When you come up with tough problems, don't be touchy. Such experience will toughen you up.
当你遇到棘手的问题时, 不要急躁, 此经历会使你更坚强.
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Taking care of pooch was his attempt to toughen me up and teach me responsibility.
他盘算着通过照看普茨使我坚强起来,并教我养成责任感.
百科语句
