Gnotobasis
无菌环境
🗣️ 情景例句
It's still raining. I want to play tennis.
仍然在下雨。我想打网球。
Who is this?I don't recognize your voice.
你是谁?我不认出你的声音。
The weather gets warmer, and the days get longer.
天气渐暖，白天渐渐变长。