🔍 牛津詞典 🎯
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檢索以下詞典:
(Mr. Ng 不推薦使用 Google 翻譯!)
最近搜尋:
only if
(rather formal) used to state the only situation in which something can happen只有
  • 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。
See also if

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