Rais
abbr. 辐射源监管信息系统；红外反射-吸收光谱学（Reflection-Absorption Infrared Spectroscopy）
🗣️ 情景例句
He is liked very much because of his courtesy.
他由于彬彬有礼而颇获好感。
What kind of breakfast did you have?
你吃了什么样的早餐？
Keep quiet! The baby is sleeping.
安静！娃娃在睡觉。