?白费口舌
... use words用词 waste one's words白费口舌 weigh words斟酌词句 ...
?白费唇舌
... waste one's breath白费唇舌 waste one's words白费唇舌 waste strength浪费体力 ...
?浪费口舌
Waste one's words; do a lot of explaining 浪费口舌;费很多话也不易说清;费话 ..
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。