铅笔的痕迹可被橡皮擦掉.Pencil marks can be erased with a rubber.你可以用橡皮擦掉铅笔记号.You can erase pencil marks with a rubber.你用橡皮擦掉写错的铅笔字迹.You use a rubber to rub out pencil marks which are wrong....
...fire alarms and smoke detectors.火警报警器和烟雾检测器Alarms went off and the sprinkler system turned on.顿警铃大响,漏水系统也启动了.We have fully functional smoke alarms on all staircases.我们在各层楼梯都安装有完全可用的烟雾警报器。Hundreds of lives could be sav...
经过几次断续后，她开始顺利地念报告了。After several starts, she read the report properly.斜长岩组中的矿层仅断续出露.Seams in the anorthosite series are only intermittently exposed.现在祖父在他的眼前显得非常衰弱, 身子软弱无力地躺在那里,从微微张开的嘴里断续地流出口水来,把颔下的衣服打湿了一团.At the moment,...