Add some old lumber strain and lumbar intervertebral disc and bone hyperplasia, waist was often pain and discomfort, if put on waist trousers, mouth too close to the body healthy influence is bigger.

再加上有些老年人有腰肌劳损和腰椎间盘突出以及骨质增生的毛病，腰部本来就经常疼痛和不舒服，如果再穿上腰口过紧的裤子，对身体健康的影响就更大了。

youdao

Butterfly valve through the valve shaft rotation to drive the rotation of a disc-shaped disc, to open and close a valve, cut off from the main pipe and throttle with.

进口蝶阀是指通过阀轴旋转来带动一个圆盘形的蝶板的转动，达到开启与关闭的一种阀门，在管道上主要起切断和节流用。

youdao

Put the CD into the disc tray, then close the tray.

把CD放入光碟托盘，然后关闭托盘。

youdao

This implementation is as close to a "disc in the drive" experience as possible over the Internet.

ENGADGET: Xbox Live gets 1080p Zune video store, Netflix browsing, Twitter and Facebook integration

It also should be pulling in rocks that get too close, gravitationally pulverising them into a thin disc that gradually and continually dopes the remnant atmosphere with silicon.

BBC: 'Dirty' stars hint at Sun's future

The disc is the 57th added to the wall, close to the original site of the Cavern Club.

BBC: Sir Paul McCartney