apply for sth 请求;申请 approve of 赞成,称许 approximate to 近似,接近 arise from (由…)引起,起源于 ask for 请求,要求 ask after 询问,问候 assist sb. in doing sth. 帮助某人[做某事] associate with 结交,交往 attend to 注意, 留心,专注, 照顾 attribute to...