Helical blade
[化] 螺旋叶片
🧩 词语组成解析
a. 螺旋状的\\n[电] 螺线
blade
[bled]
n. 刀片，剑;（壳、草等的）叶片;桨叶;浮华少年;
🗣️ 情景例句
We've only been here for a day,
我们到这里仅仅一天，
What is happening out there?
外面发生什么事情？
However, there is an even more insidious kind of pollution that particularly affects urban areas and invades our daily lives, and that is noise.
但是，还有一种更加隐蔽有害的污染，它专门影响城镇地区，侵袭我们的日常生活，那就是噪音。