VOA慢速英语:乔治·弗洛伊德被捕时使用武力合法吗？

knee –n. the joint between the upper and lower leg

custody –n. the state of being kept in a prison or jail, or being held by police

escalate –v. to become worse or to make (something) worse or more severe

conscious –adj. awake and able to understand what is happening around you

choke –v. to cause (someone) to stop breathing by squeezing the throat

precision –adj. done in a very careful and exact way