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be bound to 肯定，一定 be content with 对...满意 be concerned with 担心，忧虑 be convinced of/that 相信，认为 be engaged in 参与，从事 be equal to 等同于，相当于 be judged on 按评判，判断 admit to 许可，允许 appear to 似乎，好像 apply sth to sth 把...适用于... ask for 要求 assure sb of sth 使某人确信某事 attach importance to = pay/ call attention to 关注，重视 daily routine 日常生活 devote to 投身于，致力于 end up sth with sth 用...结束... ensure sb to do sth 保证某人做某事 expose to 暴露，接触 far from 一点也不，根本不 fail to 没能做成 federal authority 联邦政府 have to 必须得 homeland security 国土安全 hold sth to account 与....对证，核实 have difficulty in doing sth 做....有困难 at fault 有责任，有错误 be based on 以...为基础 be filled with 充满 be responsible for 对负责 | 
