夕 夕的英文 英语翻译 evening; night; sunset 拓展翻译 危在旦夕on the verge of death or destruction夕幕gloaming夕酸亚汞mercurous acetate夕线石bucholzite夕烟evening mist夕阳the setting sun夕照afterglow; evening glow夕照黄FCFsunset yellow FCF