They say hydrogen peroxide or carbamide peroxide may also help.他们还认为过氧化氢和过氧尿素也有所帮助.They say hydrogen peroxid peroxide or carbamide peroxide may also help.同时,过氧化氢或者过氧化脲也可以起到辅助的作用.They say hydrogen paroxide peroxide or car...
He skimmed the pages quickly, then read them again more carefully.他先快速地浏览页面，然后再细细阅读。The little bird skimmed over the waves looking for food.那只小鸟掠过波浪寻找食物.The leader just skimmed through the headlines of the report.这位领导只是草...
The workmen are concreting the road.工人们在用混凝土铺路.The workman is still busy concreting the road.工人还在忙着用混凝土铺路.Anchor concreting is an effective support technique to control surrounding rock deformation and keep tunnel stabil...