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- Material is made by steal or copper etc.. It required with blackening surface . 通常由铝材或者专用铜材制造;通常要求外表面发黑等.
- A hotter object is a better emitter than a cooler one, and a blackened surface is a better emitter than a silvered one. 比起较冷的物体来，较热的物体是较好的发射体；比起银白色的表面来，深色的表面是较好的发射体。
- The gas bubbled to the surface of the water. 气体变成气泡升上水面。
- 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。
- A wave broke across the surface of the pool. 一个波浪从池水表面掠过。
- 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。
- He is honest only on the surface. 他只是表面诚实而已。
- 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
- Surface mail takes longer than airmail. 普通邮件比航空邮件慢。
- Don't blacken his good name by spreading lies. 不要散播谎言诋毁他的名声。
- The surface of the lake is quite still. 湖面相当平静。
- Don't blacken my name by spreading rumours. 别散布谣言败坏我的名声。
- It's2 yuan by surface mail and3.6 yuan by air. 寄平信2元，寄航空要3元6角。
- No wool is so white that a dyer cannot blacken it. 人非圣贤，孰能无过。
- Wheels won't bite on a slippery surface. 车轮打滑。
- The surface must be thoroughly clean. 表面必须彻底弄清洁。
- The solid decomposed rapidly with blackening. 固体迅速分解并变暗。
