应该填写
instrument
设备
this 这种,意味着后面是单数
震后,这种设备有助寻找楼下的人员
After an earthquake,this kind of i_____can help look for people under the buildings.
After an earthquake,this kind of i_____can help look for people under the buildings.
this kind of后加单数还是复数
this kind of后加单数还是复数
英语人气：199 ℃时间：2019-10-10 05:08:49
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