天空中一半的恒星，都是双星，看光谱的时候，你们会发现，它们绕着彼此转动。
Half of all the stars in the sky are binaries, and so when you look at the spectra, you will see them go around each other.
西班牙的混凝土搅拌机疯狂转动：2006年一年间75万间住宅拔地而起，这是美国同期数目的一半，而美国人口是西班牙的七倍。
And Spain's cement mixers were on fire: three-quarters of a million homes were built in 2006, half the number in America, whose population is seven times larger.
这台机器转动比那台机器快半倍。
这样外侧车轮轴上的半轴齿轮比内侧车轮轴上的半轴齿轮转动更快。
Thus, the side gear on the outer-wheel axle turns more rapidly than the side gear on the inner-wheel axle.
当杰克的小主人转动开关时，杰克记住了暗码：向左转三圈，再向右转一圈半。
When Jack's little master rotary switch, Jack remembered the password: it three times to the left, turn right half circle.
由于半轴通过花键与半轴齿轮连接，从而半轴也转动。
Since the axle shafts are splined to the side gears the shafts lso rotate.
行星齿轮压着半轴齿轮，则半轴齿轮转动。
The differential pinions press against the side gears, and the side gears rotate.
对转动半无限压电陶瓷体的表面声波给出了存在性证明及其条件。
This paper is to display existence and its conditions to a surface acoustic wave propogating along surface of a half-body of piezoelectric ceramics with a rotation of constant angular velocity.
试验结果表明：实际工程中采用的很多端板连接大多属于半刚性连接，在荷载作用下，节点发生明显的转动变形。
The results show that many end-plate connections used in engineering structures are actually semirigid connections and that joint rotation occurs when loads are applied.
然而研究人员通过刺激可以控制行走和平衡的半规管却是检测头部的转动而不是重力的方向。
However, the semicircular canals that the researchers stimulated to control walking and balance detect rotational movements of the head, not the direction of gravity.
在壶内两半分别装有两 种不同茶水或饮料，转动壶盖，当壶盖小孔对应的那一半茶水或饮料就能倒出来。
On the teapot lid a small hole is cut, and in two halves of internal cavity of teapot two different tea waters or beverages are respectively held, so that one teapot can pour out two tea waters.
在壶内两半分别装有两 种不同茶水或饮料，转动壶盖，当壶盖小孔对应的那一半茶水或饮料就能倒出来。
On the teapot lid a small hole is cut, and in two halves of internal cavity of teapot two different tea waters or beverages are respectively held, so that one teapot can pour out two tea waters.
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