您要查找的是不是：
- A picture posted on the official Xinhua news agency Web site showed the gray surface of the moon splotched with craters. 官方的新华社网站上登载的一张照片显示了灰色的月球表面，上面布满了陨石坑。
- In order to improve the security and speed of iris identification systems,an iris identification method based on gray surface matching is proposed. 为了进一步提高虹膜识别系统的安全性和识别速度,提出了一种基于灰度曲面匹配的虹膜识别方法。
- His hair became gray when he was only forty. 他刚刚四十岁时，头发就变得灰白了。
- His face turned gray as he heard the bad news. 听到这个坏消息后，他的脸变得苍白。
- The gas bubbled to the surface of the water. 气体变成气泡升上水面。
- It is a medium- size samsonite, and it's gray. 它是一个中型的灰色绅耐特皮箱。
- The surface of the liquid gradually crusted over. 液体表面渐渐地结了一层皮。
- A breeze ruffled the surface of the lake. 一阵微风吹皱了湖面。
- The blue shirt and gray tie are a good match. 蓝衬衫和灰领带很相配。
- Stolen chips can find access to the gray market. 偷来的芯片可在水货市场上找到销路。
- He was still looking gray and very tired. 他看上去仍然面色苍白,疲惫不堪。
- A wave broke across the surface of the pool. 一个波浪从池水表面掠过。
- His black hair was tinged with gray. 他的黑头发带着一点灰白。
- The calm water surface is very much like a mirror. 那平静的水面十分象一面镜子。
- Acid had pitted the surface of the silver. 酸把银器的表面腐蚀了。
- A yellowish gray to pale orange yellow. 土黄色，浅黄褐色一种黄灰色到淡桔黄色
- He is honest only on the surface. 他只是表面诚实而已。
- Gray or white with or as if with age. 灰白的因年老而头发灰白的
- A film of mucus and bacteria on a tooth surface. 齿菌斑牙齿表面一层粘液和细菌的膜
- The hard outer portion or surface area of bread. 面包皮面包的表面区域的硬皮
