姿势摆得好英语怎么说

"Holding a good posture" 或者 "having good posture" 都可以用来描述人的姿势摆得好。
"Posture" 是英文中一个常用的单词，指人或动物的站立、坐着或躺着时的姿势或形态。所以，"good posture" 就是指身体姿势摆得良好的状态。
下面是一些例句：
It's important to maintain good posture while sitting at a desk for long periods of time. (保持良好的坐姿在长时间坐在桌前很重要。)
He has good posture when standing, with his shoulders back and his head held high. (他站着时姿势良好，肩膀向后，头高高举着。)
She always reminds her children to sit up straight and have good posture. (她总是提醒她的孩子们坐直，保持良好的姿势。)