Seva
abbr. stand-up extravehicular activity （宇航员在外层空间的）直立舱外活动
🗣️ 情景例句
People who take less exercise seem more vulnerable to illness.
缺少运动的人对疾病的抵抗力就差。
A good tongue is a good weapon.
伶俐的口齿是一种锐利的武器。
Doesn't Karen Marsh look old!
卡伦看上去不显老嘛！