Retrodiffusion
后向散射, 反散射
🗣️ 情景例句
Don't forget to bring me a souvenir.
别忘了给我带回点儿纪念品。
The building of the new road has been held up by bad weather.
这条新马路的修筑因天气恶劣而受阻。
'A new play is coming to The Globe soon,' I said.
“一出新剧要来‘环球剧场’上演了，”我说，