例句與造句

1. The semi - automatic liquid nitrogen extracter is lowcost and easy - to - use , which can prevent the volatilization of the liquid nitrogen during the extraction
   摘要介紹一種自制的半自動液氮提取器，該提取器制作成本低廉，操作簡單，并可以避免治療過程中提取液氮時液氮的大量揮發(fā)，從而可以減少資源浪費，降低治療成本。
2. It's difficult to find extracter in a sentence. 用extracter造句挺難的