?费尽心思
[ghastly pale;pallid] 惨白,没有血色 [pains-taking;take a lot of troubles;take great pains;with much ado] 费尽心思 [fall back] [口]∶后退,多指畏缩不前,落在后面 ..
?辛辛苦苦
辛辛苦苦 toil and moil; take a lot of trouble; take great pains; with so much toil; wor ..
大费周章
极力做
孜孜不倦
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。