He wore it about where a house wears a wind vane.

他把它戴在房子有风向标的地方。

This is why some chimneys are equipped with helical vanes to create turbulence and break up the vortices.

这就是为什么一些烟囱配备了螺旋叶片来产生湍流并打破涡流。

He used valve and vane to help vaporize vanilla.

他用电子管和风向标来帮忙蒸发香草。

When the weather vane changes direction.

改变方向时会是什么状况。

" What is CHOAM but the weather vane of our times, " the old woman said.

“CHOAM 是我们时代的风向标， ” 老妇人说。

Due to the fact there was something wrong with the weathercock and weather vane, it might not be correct.

由于风标有一些问题，天气预报可能不准。

Ho! again! —drive off that hawk! see! he pecks—he tears the vane”— pointing to the red flag flying at the main-truck—“Ha, he soars away with it!

嚯！又来了！——把那只鹰赶走！看！它在啄——在撕扯风信旗——”他指着主桅冠上飘舞的红旗，“哈！它叼着它远走高飞了！

Over the parapet showed quaint and fanciful little buildings, which I supposed to be booths or shops, beset with painted and gilded vanes and spirelets.

栏杆上方是古色古香的小建筑物， 我认为它们是摊位或商店， 周围环绕着彩绘和镀金的叶片和尖顶。

Today, the typical feather consists of a central shaft, called a rachis, with serial paired barbs forming a flat, curved surface, which is called a vane.

今天，典型的羽毛包含一个中心轴（称为羽轴），还有连续成对的羽支形成平坦弯曲的表面，这被称为叶片。

The central part of the feather became a hardened structure called a rachis, with lots of little barbs and barbules, creating the vanes of the feather.

羽毛的中央部分变成了一种称为羽轴的硬化结构，上面有许多小倒钩和小枝，形成了羽毛的叶片。