All the satellite needs in order to move in its orbit is the initial speed given it by carrier rocket.

卫星要在其轨道上运行所需要的只是由运载火箭给它的初速度。

youdao

Given the speed of change, will it come soon enough?

鉴于目前变化的速度，我们所需要的思想会很快出现吗？

youdao

The maximum speed is usually given as 100 megabits per second downstream (from the network to you) and 50 megabits per second upstream (back to the network).

通常给出的最高速度是下行100兆每秒(下行就是数据从网络到你)，上行速度50兆每秒(你传输数据到网络)。

youdao

The fact that you don't need a force for it to move forever at a given speed in a given direction, that's not obvious, because in daily life you don't see that.

对于物体不需要力的作用就能保持,确定的速度和方向持续运动这一事实,它并非显而易见,因为在日常生活中你看不到这种情况

耶鲁公开课 - 基础物理课程节选

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