正在确认阅读权限…
How Fog Forms Over Cold Lakes in Early Morning
冷湖晨雾如何形成:水汽凝结的物理条件
精读先不看文字,完整听一遍。
-
Fog often appears over cold lakes just before sunrise when air temperature drops rapidly.日出前气温骤降时,冷湖面上常出现雾。
-
The lake surface stays relatively warmer than the surrounding air overnight due to water’s high heat capacity.因水的比热容大,湖面夜间降温慢,温度通常高于周围空气。
-
Moist air near the water cools below its dew point as it contacts cooler air layers above.贴近水面的潮湿空气接触上方较冷气层后,温度降至露点以下。
-
This cooling causes invisible water vapor to condense into tiny liquid droplets suspended in air.这种降温使不可见的水蒸气凝结成悬浮于空气中的微小液滴。
-
Radiation cooling from the ground enhances this effect, especially under clear, calm night skies.地面辐射冷却会加剧这一现象,尤其在晴朗、无风的夜晚。
-
Unlike steam fog, this type is called 'radiation fog' and forms most frequently in autumn.与蒸汽雾不同,此类雾称为‘辐射雾’,多出现在秋季。
-
Wind speeds below 3 mph help maintain stable layers needed for fog development.风速低于3英里/小时有助于维持雾形成所需的稳定气层。
-
Scientists monitor humidity, temperature gradients, and wind patterns to forecast such fog events accurately.科学家通过监测湿度、温度梯度和风场来准确预报此类雾。
-
Local weather stations use infrared sensors to detect surface cooling rates in real time.当地气象站利用红外传感器实时探测地表冷却速率。
-
Understanding fog formation improves safety for morning boaters and low-altitude pilots.了解雾的形成机制有助于提升清晨船员和低空飞行员的安全。
精读 · 大约 10 分钟
听 → 读 → 学表达 → 懂 → 今天会说这一句 → 跟读录音 → 自己说一句。
③ 学 · 重点表达
- Understanding fog formation improves safety for morning boaters and low-altitude pilots. 了解雾的形成机制有助于提升清晨船员和低空飞行员的安全。
- Wind speeds below 3 mph help maintain stable layers needed for fog development. 风速低于3英里/小时有助于维持雾形成所需的稳定气层。
- Fog often appears over cold lakes just before sunrise when air temperature drops rapidly. 日出前气温骤降时,冷湖面上常出现雾。
④ 懂 · 选一选
⑤ 今天会说这一句
Understanding fog formation improves safety for morning boaters and low-altitude pilots.
⑥ 跟读并录音
Understanding fog formation improves safety for morning boaters and low-altitude pilots.
第一版:录下来、回听、再听标准音。系统打分以后再加。
⑦ 说 · 自己来一句
用今天的表达,自己说一句。
例子:Understanding fog formation improves safety for morning boaters and low-altitude pilots.
已记下。连续天数以后会显示在课表里。
陈老师指导
课程开发中,敬请期待。成人和孩子都可以先自学听读、精读。
这边的讲解音轨还在做。想先跟着老师走完固定 30 课,可以去陈老师带读社(和自学通行不是同一份会员)。
课程开发中,敬请期待。