英语词汇“only if”的释义、用法及例句-英汉例句词典-知否

词汇	only if
例句	Idiom Only if a teacher has given permission is a student allowed to leave the room. 学生只有得到老师的许可才能离开教室。 Only if the red light comes on is there any danger to employees. 只有红灯闪亮时才有危及职工的险情。
随便看	unhitched unhitches unhitching unholy unhook unhooked unhooking unhooks unhurried unhurriedly unhurt unhygienic uni- uni unicameral UNICEF unicellular outspread outstanding outstandingly outstation outstay outstayed outstaying outstay/overstay your welcome

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