S-r
abbr. learning stimulus-response learning 学习刺激—响应学习; send-receive 发射-接收
🗣️ 情景例句
Great idea!
好主意！
But today well lived makes every yesterday a dream of happiness, and every tomorrow a vision of hope.
只有今天好好地生活，昨天才会变成幸福的回忆，明天才会成为希望的憧憬。
The normal price of a ticket is $2,000!
而正常票价是2，000英镑！