Someday we may be able to take any cell and keep it alive functioning and reproducing itself essentially forever through the use of telomerase.(總有一天，我們也許能夠利用端粒酶使任何細胞保持活力，使其正常工作并永久地自我復制。)

I'm now applying to graduate school, which means someday I'll return to a profession where people need to be nice to me in order to get what they want.(我現在正在向研究生院提交申請，這意味著有朝一日，我會重新找到一份工作，一份人們為了得到他們想要的東西而對我非常友好的工作。)

"When I was a little girl, I saw an ice-cream truck and knew I wanted to have one someday," McCartney said.(“當我還是個小女孩的時候，我看到了一輛冰淇淋車，我知道有一天我也想要一輛。”麥卡特尼說。)

They hope paper bags will be banned someday.(他們希望有一天紙袋會被禁用。)

Someday a stranger will read your e-mail without your permission or scan the Website you've visited.(總有一天，一個陌生人會在沒有得到你允許的情況下閱讀你的電子郵件，或者瀏覽你訪問過的網站。)

When you only focus on a big goal someday, it's easy to get burned out by the daily grind.(當你只將注意力放在一個大目標的時候，你很容易就被日常單調的事情磨得筋疲力竭。)

It looked exactly like mine, which is inspiring in a way knowing my violin could also produce beautiful tones, that maybe I would sound that good someday.(它看起來和我的琴一模一樣，挺鼓舞人心的，因為這讓我知道我的琴也能發出這樣優美的音色，也許有一天，我也能演奏出那么好聽的樂曲。)

Someday, you can retell your family's stories.(有一天，你可以復述你家庭的故事。)

There is a tree in front of my house. Someday, I found a bird's nest in it.(在我的房子前面有一棵樹。有一天，我發現樹上有一個鳥巢。)

I solemnly vowed that someday I would return to live in Europe.(我鄭重起誓總有一天我要重回歐洲生活。)