口 need or exert great effort; be strenuous- ♦ 安装这台机器真~。 It really took a lot of effort to install this machine.
- ♦ 他看英文参考书一点不~。 He can read reference books in English without difficulty.
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sap英语在线翻译词典收录了95854条英语词汇在线翻译词条，基本涵盖了全部常用英语词汇的中英文双语翻译及用法，是英语学习的有利工具。