The effector API permits turning the robot, moving at a certain speed, kicking the ball, or simply moving the ball.

效应器 API 允许对机器人进行调优，以特定的速度移动、踢球或简单地带球。

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Variable-speed control we already know, at a certain speed axial flow pump are working under, and to obtain the corresponding flow, lift, power and efficiency.

变速调节我们已经知道，轴流泵是在一定转速下工作的，而且获得相应的流量、扬程、功率和效率等。

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Disabling certain aspects of this test (such as a full memory test) can certainly help boot speed but at the cost of a boot-time system integrity test.

将这个测试的某些部分禁用(例如内存完全测试)确实有助于加快引导速度，不过这样做的代价是丢失了引导时对系统的完整性测试。

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What it means is if you'd release a rock at that location one second before with a certain speed that we can calculate, it would've ended up here with precisely the position and velocity it had at the beginning of our experiment.

它的意义在于,若在该处以特定速度抛出一个物体,这个速度可通过计算得到,一秒之后,物体会运动至我们设定的起点,并且速度为我们设定的初速度

耶鲁公开课 - 基础物理课程节选

"At a certain speed, you're able to get away with more mistakes, " Mozeliak says.

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Let consumers decide, let them pay 40 bucks a month if they want a certain, they want to download video at a certain speed, or 60 bucks a month if they want to download even more.

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"If you want to set it at a certain speed -- say, 'I don't want my kid going over 65 mph' -- it'll beep at them until they slow down, " said Michael Copeland, sales manager for manufacturer Davis Instruments.

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