Titroscope
滴定式酸碱计
🗣️ 情景例句
Speaking of promoting the book,
说起促销书的事
I did homework lat night.
我昨晚做家庭作业。
Now she's holding it for Jim. Jim is climbing up the ladder.
现在她在给吉姆扶着梯子。吉姆正在爬上梯子。