A portabledrill or an electric chainsaw could save Labour, and make light of roughing out big boards.
便携钻机或是电动链锯能够节省体力，并使大块木板的粗加工化繁为简。
2
Before you buy a portabledrill, check the manufacturer warranty as well as the availability of parts.
在购买便携式钻子之前，核对下生产厂商的担保书以及可以使用的部件。
3
This paper studys noise produced by portable electric drill on theory and experiment. It can help find methods of reducing portable electric drill noise.