necked in operationnecking in operation割: cut; mow缺口: breach; gap; loophole缺口: 1.(物体边缘缺掉一块) breach; gap; loophole 不留缺口 leave no loopholes; 打开缺口 make [open] a breach2.(不足;缺额)insufficiency3.[机械工程]notchgiuk缺口: giuk gap凹槽,缺口: notch下载手机词典可随时随地查词查翻译