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以上来源于: WordNet
N the very small continuous change in the direction of motion of a star relative to the sun. It is determined from its radial and tangential motion 自行
High proper motion normally indicates a nearby star, so displaying proper motion labels is a quick way of spotting such stars.
高自行通常表示是一颗近距离恒星，所以显示自行标签是确准此类恒星位置的快捷途径。
A pandemic sets national authorities in motion to implement preparedness plans, identify cases as efficiently as possible, and minimize serious illness and deaths with proper treatment.
暴发大流行要求国家当局行动起来，实施防范计划，尽可能有效发现病例，并通过适当治疗患者，尽可能减少重症病例和死亡人数。
On the basis of analyses over the collision theory, a motion mathematical model of the mixture on the vibration sieve is established with proper assumption.
从颗粒碰撞理论出发，在合理假设的前提下建立物料颗粒在筛面上的运动模型。
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