Rtg
abbr. 放射性同位素热电式发电机（Radioisotope Thermo-electric Generator）
🗣️ 情景例句
Sorry I'm late.
很抱歉我迟到了。
But it looks like that's out of the question.
但现在看起来不太可能。
Don't talk to me like that!
别那样和我说话！