Fehling's solution
[医] 费林氏溶液(检尿糖用)
🧩 词语组成解析
🗣️ 情景例句
I need some.
我确实需要。
Is the departure time on schedule?
起飞时间准时吗？
Both the police and the workmen were grateful to the student for this piece of advance information.
警察与工人都对那个学生事先通报情况表示感谢。