点击下方单词,选择对的这个单词
ph.
1. 打开,开启(电灯等)If you switch on a light or other electrical device, you make it start working by operating a switch.
1. cause to operate by flipping a switch
e.g. switch on the lightturn on the stereo
Synonym: turn on
多通过句子记忆单词,而不是单独死记硬背。