updrafts

1. Some viewers wondered if they were scraps of paper or plastic caught in updrafts from the spotlights’ heat.: 有些人以为这些物体可能是聚光灯发光时产生的热量捕捉到的漂浮在高空的纸片或塑料碎片。

2. These downdrafts hit the surface of the planet, flow outward, and collide with each other, forming updrafts.: 气流向下落在地球表面，向外流动，相互碰撞，如此一来就形成上升气流。

3. But without a raptor's sharply honed sense for the gravity-defying updrafts, humans are beholden to chance.: 但是如果没有猛禽们对克服重力的上升气流敏锐的判断力，人们常常错失良机。

4. Some viewers wondered if they were scraps of paper or plastic caught in updrafts from the spotlights' heat.: 一些目击者认为这也许是聚光灯中心处漂浮的纸屑和塑料碎片。

5. Tornadoes form when the updrafts of air that supply storms with warm humid air become a vortex or high-speed whirlwind.: 当上升气流与能形成风暴的湿热空气变成高死锬旋风时，就形成了龙卷风。

6. Tornadoes form when the updrafts of air that supply storms with warm, humid air become a vortex, or high-speed whirlwind.: 当上升气流与能形成风暴的湿热空气变成高速的旋风时，就形成了龙卷风。

7. Others think bacteria might be sucked through updrafts caused by a special kind of lightning that travels upwards from cloud tops.: 还有人认为，细菌也许是卷入了一种自云层顶端向上运行的特殊闪电造成的上升气流。

8. There, warm updrafts coming from the heated land surface took the water vapor up even higher to a place where the air is quite cold.: 那里，从热的地表来的暖的上升气流把水蒸气带到甚至空气很冷的更高的地方。

9. Sea salts can enhance cloud drops number concentration under the case of large updrafts and decrease under the case of low updrafts.: 而海盐粒子的存在，加剧了水汽的供应不足，从而可以在很大程度上进一步降低云滴数目。

10. The vertical flow over the urban generally consists of a close circulation characterized by strong daytime updrafts at the center city.: 在沿城市的垂直剖面流场上组成了闭合的局地环流圈，白天垂直上升运动明显。

11. This creates downward air currents. These downdrafts hit the surface of the planet, flow outward, and collide with each other, forming updrafts.: 气流向下落在地球表面，向外流动，相互碰撞，如此一来就形成上升气流。

12. These massive seabirds use a wingspan topping 8 feet (2.5 meters) to glide gracefully, often for hundreds of miles, using thermal updrafts to gain altitude.: 5米优雅地滑翔，经常飞翔数百里，它们利用热上升气流升高。

13. The ice particles in the clouds grow and combine to become so large that upward flowing air (updrafts) in the clouds can no longer support them, and they fall to the ground.: 粒子在冰云和成长相结合，变得如此之大，向上流动在云中的空气上升气流可以不再支持他们，他们倒在地上。

14. An experiment to examine the vertical continuity of microphysical processes in relation to the supporting updrafts was conducted during the Florida Area Cumulus Experiment (FACE) in 1978.: 本文利用FACE（佛罗里达积云试验）1978年夏季积云飞机实测资料，对微物理过程的垂直连续性及其和上升气流的关系进行了研究。

15. An experiment to examine the vertical continuity of microphysical processes in relation to the supporting updrafts was conducted during the Florida Area Cumulus Experiment (FACE) in 1978.: 本文利用FACE（佛罗里达积云试验）1978年夏季积云飞机实测资料，对微物理过程的垂直连续性及其和上升气流的关系进行了研究。

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