那儿的竞争异常残酷。It is very much dog eat dog out there.这些残酷的刑具是用来阻止犯人弯腿的。These cruel devices are designed to stop prisoners bending their legs.他们幸福地生活在不受残酷现实干扰的世界里。They lived in happy insulation from brutal facts....
The paper introduced the technical progress in air curing fluorinated polyurethane coatings.介绍了常温固化含氟聚氨酯涂料的研究进展.Meanwhile , fluorinated acrylate latexes performed better based on present experimental parameters.三种材料中, 含氟...