Most people reach their peak bone mass around age 30.
大部分人在30岁左右的时候到达其骨量峰值。
For every month in space, astronauts lose around 2% of their bone mass.
在太空中每过一个月，宇航员就会失去大约2%的骨骼重量。
There's an object mass little m going in a circle around capital M.
质量是小m的,物体围绕着,大M作圆周运动。
Mars is nearly half the size of Earth but around one tenth the mass.
火星大小几乎是地球的一半质量是地球的1/10.
We move products around by direct shipping, which is a sort of mass-transportation for goods.
我们通过直接运输方式移动产品，这是一种大规模货物运输方式。
The center of mass is lower, around half of the machine height.
该中心的质量较低，大约一半的机器的高度。
The planet and the star both orbit around a common centre of mass between them.
地球轨道的明星都围绕一个共同的质量中心之间。
Around the 1st century BC, the territory of Rome experienced a quick and mass extension.
公元前1世纪前后，罗马国家的版图经历了大规模而迅速的扩张。
There was a mass of people around the club entrance.
俱乐部门口聚集着一大群人。
The fragmentation of the building mass mimics the broken up rock cliffs around it.
分散的建筑体量模仿了周围裂开的岩石。
But on the faces around him, there showed fear, terror, shock, almost mass hysteria.
但环视厅中的众人，无不脸露恐惧、惶惑、震惊和近乎歇斯底里的情绪。
But on the faces around him, there showed fear, terror, shock, almost mass hysteria.
但环视厅中的众人，无不脸露恐惧、惶惑、震惊和近乎歇斯底里的情绪。
应用推荐