Riemann
n. 黎曼（德國數學家）
??? 情景例句
I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.
我星期五會給你打電話，在你方便的時間重新安裝我們的午餐約會。
I appreciate your helping me.
感謝你的幫助。
He did a lot of research and travelled around the USA looking for information about his ancestors.
他做了大量的研究，在美國跑了許多地方，了解有關祖先的情況。