请输入您要查询的英文单词：
单词
to be an effort to do sth
释义
to be an effort to do sth
(difficult)
做某事费劲
It was an effort to concentrate.
要想全神贯注很困难。
See effort
随便看
to be in the zone
to be in thrall to sth
to be intimately acquainted with sth
to be into sb
to be into sth
to be in touch
to be in touch
to be in touch with sb
to be in touch with sth
to be in town
to be in training for sth
to be in trouble
to be in tune
to be in turmoil
to be in two minds about sth
to be in uncharted territory
to be inundated with sth
to be in uproar
to be in uproar about sth
to be in uproar over sth
to be in use
to be in vain
to be inversely proportional to sth
to be invested with powers
to be investigated by sb
英汉双解词典包含368430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。
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更新时间：2026/6/19 3:46:49