困难,使强壮;
The acrylate terminated and maleic acid terminated liquid rubbers were prepared and used to toughen UP.
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.
Basically he needs to toughen up a little bit.
主要是,他需要更强悍点.
The city council is determined to toughen up the against crime.
市政会议决心增强与犯罪作斗争的力度.
The city council is determined to toughen up the fight against crime.
市议会决心强化打击犯罪的斗争.
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