Ufos
abbr. 不明飞行物（Unidentified Flying Objects）
🗣️ 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。
Hey you! Don't touch that picture!
喂，你！别碰那幅画！
Mum, I don't feel very well.
妈妈，我感到不舒服。