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- A falling object gains momentum as it falls. 下落的物体落下时动量增加。
- A falling object gains momentum as it falls . 动量;(火箭)总冲量;动力;[口]惰性,势头;契机,要素
- Thud: the sound like a falling object hitting the ground. 东西掉地下的声音。
- Galileo's experiments threw doubt on Aristotle's theory of falling objects. 伽利略的实验使人们对亚里士多德的落体理论产生了怀疑。
- At last, Galileo decided that he had found the truth about falling objects. 最后，伽利略断定他已经发现了关于落体的真理。
- The first scientist to correctly describe the behavior of falling objects was Galileo. 第一个正确描述落体性质的科学家是伽利略。
- As a falling object speeds up, drag increases until it is equal to gravity. 随着下落物体速度的增加,所受阻力也在增加,直至阻力与重力相等。
- Galileo is said to have conducted his revolutionary experiments with falling objects from the off-kilter belfry. 伽利略曾在这个失去平衡的倾斜的钟楼上做过具有划时代意义的自由落体实验。
- People should take precautions against violent gusts and beware of flying debris and falling objects. 市民应提防猛烈阵风,留心被飞散物及坠落物击中。
- Then an Italian scientist named Galileo began to question Aristotle's theory of falling objects. 后来一个名叫伽利略的意大利科学家，开始对亚里斯多德的落体学说提出质疑。
- The horse kicked its fallen rider about the head. 那匹马乱踢从它背上掉下来的骑手的头部。
- The chain has fallen foul of plants in the water. 链条已和水中的植物缠绕在了一起。
- Materials are not to be left unsecured in elevated areas - falling objects could cause serious injuries. 材料不可未加可靠固定，随便放在高空区域，因为物体坠落会严重伤人。
- The takings at the football stadium has fallen off. 足球运动场的收入减少了。
- Instead,many deaths and injuries in earthquakes result from falling objects and the collapse of buildings,bridges,and other structures. 地震中许多伤亡是由坠落物和建筑物、桥梁以及其他建筑的坍塌造成的。
- People there have fallen out of wearing long gowns. 在那儿人们已经不再穿长袍了。
- He has fallen in love and is hard hit. 他已坠入情网，甚为痛苦。
- The leading causes of death among construction workers are falls from elevations, motor vehicle crashes, electrocution, machines, and struck by falling objects. 在建筑工人死亡案例中主要原因是高处坠落、车辆坠毁、电击，机器，还有被落下坠落物体打中。
- He has fallen out of the habit of drinking. 他已经戒除了喝酒的习惯。
- The beautiful vase has fallen to pieces. 那个美丽的花瓶已摔成碎片。
