GbEng
文件已经被输入到一台便携式电脑里了。 The documents have been typed into a portable computer.
千斤顶,起重机通过杠杆、螺丝钉或水的压力把重物提起的便携式装置 A usually portable device for raising heavy objects by means of force applied with a lever, screw, or hydraulic press.