When the concave upper nut is tightened, the effect produced is exactly the same as that produced by a hammer driving in a wedge.

当上螺母的凹面与之锁紧时，其效果与用一个锤子敲进一楔子的效果完全相同。

youdao

Only occasionally, when I was driving my car, or when I was in Hanna's apartment, did thoughts of it get the upper hand and trigger memories.

仅在我偶尔驾车时，或我在汉娜的公寓时，这种思想才占了上风，触发了回忆。

youdao

NE series plate chain bucket elevator is composed of upper section middle casing lower section moving members driving unit maintenance platform and hanging racks.

提升机由上部区段、中部机壳、下部区段、运行部件、驱动装置、检修平台和吊架组成。

youdao

In those markets, however, Apple has to content with a new breed of smartphone competition that are driving the price points well below the mid- and upper tier ones that Apple tends to compete in.

FORBES: After Earnings, What Can Apple Do Next?