短語詞組短語back -burner 不重要的back wall of burner 小爐后墻on the back burner 擱在靠后的爐子上；擱置著put on the back burner 先擱置一邊;緩議;暫時擱置一旁;把back and forth type burner 往復式燃燒爐 返回 back burner