Keeping his distance, a diver sets up equipment to measure the whirlpool's flow rate.
在保持一定距离的同时，潜水员会安装设备来测量这个漩涡的流速。
2
H0 is the Hubble constant, or parameter that indicates the rate at which the universe is expanding; and distance is the galaxy's distance from the one with which it's being compared.
To work out the solution to these problems, enhancing the field strength and Covering Rate, extending the distance in communication, improving the definition of voice are essential.