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- Layers of sedimentary rock;a layer of warm air. 多层的沉积岩;热空气层
- They also have 30 percent more feathers in the winter and can fluff them up, trapping a layer of warm air. 它们的羽毛在冬季也要增加30%25，它们把羽毛蓬松开，来保留住一层温暖的空气。
- layers of sedimentary rock; a layer of warm air 多层的沉积岩；热空气层
- layers of sedimentary rock; a layer of warm air. 多层的沉积岩；热空气层
- The rain drops may start downward through a layer of warm air and then strike a mass of cold air, where each raindrop freezes 雨滴可能先穿过暖空气层往下落，然后又接触到一团冷空气，于是每个雨滴都冻结成冰珠。
- The rain drops may start downward through a layer of warm air and then strike a mass.of cold air, where each raindrop freezes 雨滴可能先穿过暖空气层往下落，然后又接触到一团冷空气，于是每个雨滴都冻结成冰珠。
- A layer of warm air 一片温暖的空气
- On the other hand, warm air beneath a layer of cool air tends to rise, resulting in an unstable or convective situation sometimes causing showers and thunderstorms. 反过来说,冷空气下的暖空气会向上升,造成大气不稳定或对流状态,有时因而产生骤雨和雷暴。
- Currents of warm air keep the hang-gliders aloft. 悬挂式滑翔机借着暖气流在高空飞行。
- A layer of trapped air that serves as insulation. 用于绝缘的密封空气层
- Why can a hydrofoil move on a layer of air? 为什么气垫船能靠后方的气流移动？
- A layer of skin peeled off her sun-burnt back. 她晒黑的背上掉了一层皮。
- This cake has a layer of chocolate in the middle. 这蛋糕中间有一层巧克力。
- This seam of coal reposes on a layer of clay. 这个煤层处于一层黏土岩之上。
- An inner layer of warm clothing. 保暖服装衬里
- Rain occurs when a mass of warm air is laden with water. 一团云聚集大量的水蒸气就形成了雨。
- The flood deposited a layer of mud in the street . 洪水过后，街道上积了一层泥。
- Rain occurs when a mass of warm air laden with water vapor rises. 当满含水汽的暖空气团上升时，就会下雨。
- This cake has a layer of fruit in the middle. 这蛋糕中间有一层水果。
- My parents want to make a layer of me. 我父母要我将来做医生。
