他的眼陷下去,连脸上那块疤都有些发暗.His eyes became sunken and even the scar on his face darkened.事实上深到发暗就不吸引人了.In fact, so deep that the color is dull and unattractive....
The document was authenticated by a seal.文件有印鉴为凭....note paper bearing the Presidential seal...盖有总统印章的便笺Improved injector nozzles seal off better to keep the process leak - free and the molding operation dry.改进了的注射喷头密封更好...