Fluorexon
[化] 钙黄绿素
🗣️ 情景例句
Oh, this is my father. He's a doctor.
噢， 这是我父亲， 他是一名医生。
Why are you walking so far?
你为什么走得这样快？
it is extremely difficult to estimate the true value of the services which people perform for us.
但要估算别人为我们为所提供的服务的价值却是极其困难的。