您要查找的是不是：
- There was a long lag in forwarding mail to us. 转寄给我们的邮件晚了很久才拿到。
- Production lagged and unemployment rose. 生产减少,失业增加。
- 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。
- Be modest, otherwise you will lag behind. 要谦虚，否则就要落后。
- A breeze ruffled the surface of the lake. 一阵微风吹皱了湖面。
- There is a time lag of about 10 years. 有大约十年时间的间歇。
- I felt completely disorientated with the jet lag. 我乘长途飞机後因生理节奏失调而感到昏昏沉沉的。
- 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。
- Even though he tried, he still lagged behind other runners. 尽管他努力了，仍落在其他赛跑者之后。
- 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。
- The children always lag behind when we go for a walk. 我们出去散步时，孩子们总是落在后面。
- The surface of the lake is quite still. 湖面相当平静。
- It's2 yuan by surface mail and3.6 yuan by air. 寄平信2元，寄航空要3元6角。
- If your payments of rent lag behind, you will be asked to leave. 你要是不能按时付房租，就要请你搬家。
