Keep your knees straight and touch the ground with your ears! called Charlotte.
“膝盖挺直,把你的耳朵碰到地面!”夏洛叫道。
英语百科
Knee (strike)
(重定向自Straight knee)
A knee strike (commonly referred to simply as a knee) is a strike with the knee, either with the kneecap or the surrounding area. Kneeing is a disallowed practice in many combat sports, especially to the head of a downed opponent. Styles such as Muay Thai and several mixed martial arts organizations allow kneeing depending on the positioning of the fighters.