seat post

基本解释

Here you can see the underside of the seat post support.
在这里您可以看到下面的座位后的支持。
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Seat post fits into sliding seat block and can slide up and down to adjust for height.
后座椅滑动符合所在地块，可以幻灯片向上和向下调整的高度。
I will crest this hill first if I have to grab your seat post, and spray energy drink in your eyes.
为了要先爬上那个坡，我不惜抓住你的座管，再把运动饮料洒到你的眼睛。

"It has serious trouble in the sense that those who are wedded to the idea of a permanent global jihad with Somalia as a staging post are now in the driver's seat,".

That saves as much as 50 grams and keeps the seat post from sliding.
FORBES: Spinning Wheels
To compensate, some manufacturers will even slightly alter the geometry of a commuter cycle, perhaps tilting the seat post at a different angle, but that could potentially lead to shorter riders being forced into a more hunched or horizontal position.
ENGADGET: Engineering a better bicycle with DBC City Bike Design Alt
The ten-seat board, dominated in the post-Enron age by eight independent directors, has appointed a four-member search committee--without inviting Andreas to join it.
FORBES: Magazine Article