n. 评级；等级（rating的复数形式）

n an appraisal of the value of something

n act of ascertaining or fixing the value or worth of

n standing or position on a scale

n rank in a military organization

v assign a rank or rating to

v be worthy of or have a certain rating

v estimate the value of

v desert one's party or group of friends, for example, for one's personal advantage

v employ scabs or strike breakers in

v take the place of work of someone on strike

v give (hair) the appearance of being fuller by using a rat

v catch rats, especially with dogs

v give away information about somebody