Unaflow
单流的, 直流的
🗣️ 情景例句
Do we have a bottle opener on the list, Marilyn?
清单上有开瓶器吗， Marilyn？
Is he coming to dinner?
他回来吃饭吗？
The weather gets warmer, and the days get longer.
天气渐暖，白天渐渐变长。