Condoms are an effective method of birth control if used with care.如果使用得当，避孕套是很有效的避孕手段。Light colours provide an effective backdrop for pictures or a mirror.浅色是挂放图画或镜子很有效果的衬托。Women are sometimes seen to be less effective ...
The net is weighted to keep it below the surface of the water.这个网加了坠因而可没入水面以下。Circumstances are weighted in his favour.情况对他尤其有利.She was weighted down with her heavy bags.她因背着她沉重的袋子而累弯了腰.Cosh: a weighted weapon similar to...