have a sharp tongue idiom (also be sharp-tongued)
说话尖刻，有一张刀子嘴
to be someone who often criticizes and speaks in a severe way
Jane has a sharp tongue, so be warned. 小心点，简说话很刻薄。
江苏热线英汉汉英双解词典包含207361条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。