Both of your answers are wrong.你的两个答案都是错误的。
Both of them have left.他们两个都离开了。
Both of us want to help.我们俩都想帮忙。
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。