Heat barrier
n. 热障，速度极限
📖 牛津释义
heat barrier
limit on the speed of aircraft, etc caused by heat resulting from air friction 热障（因摩擦生热使飞行器等受到的速度限制）.
🧩 词语组成解析
heat
[hi:t]
n. 热，热度，高温;热烈，激烈;（身体的）发烧，发热;发情;
vt.&vi. 使温暖，使热;激发…的感情，使兴奋;
🗣️ 情景例句
It's the first thing people will see when they come in.
这是人们走进来所看到的第一 件东西。
Thanks for the advice,but this is something I have to figure out myself.
谢谢忠告，但是这必须由我自己解决。
Most of them were able to climb out in time. However four men were not quick enough to escape the flames.
大部分工人能够及时逃生。可是有4个工人来不及逃离火场。