Ncbi
美國國家生物技術信息中心(National Center of Biotechnology Information)
??? 情景例句
Thanks, Grandpa. Please sit down.
謝謝你， 爺爺。請坐。
Necessity knows no law.
鋌而走險。
You'd better hurry and buy a ticket then. It'll be very popular.
那你最好趕緊買張票吧！他的音樂會是很受歡迎的。