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 emphasized the importance of being honest.
他强调诚实的重要性。
I'm hoping to spend a few days in the mountains.
我正在希望到在山上过一些天。
It's very smart.Short skirts are in fashion now.
它很时髦。短裙现在很流行。