標(biāo)題:Do We Age Steadily, or in Bursts?

正文：For many people, aging feels like it happens in stops and starts. After a period of smooth sailing, one day, seemingly out of the blue, you have achy knees. “You wake up in the morning and you suddenly feel old,” said Dr. Steve Hoffmann, a computational biology professor at the Leibniz Institute on Aging in Jena, Germany. “That’s sort of the takeaway.” It turns out there may be a scientific basis for this experience. By analyzing age-related markers, such as proteins and DNA tags in the bloodstream, some scientists are coming to understand that aging in adulthood is not a linear process, but perhaps one that jumps dramatically at certain points in one’s life.

知識(shí)點(diǎn) ：in stops and starts

Irregularly; with periods of stopping and starting.斷斷續(xù)續(xù)地；時(shí)停時(shí)續(xù)地

The project progressed in stops and starts due to funding issues.由于資金問題，這個(gè)項(xiàng)目時(shí)斷時(shí)續(xù)地進(jìn)行著。

獲取外刊的完整原文以及精講筆記，請(qǐng)關(guān)注微信公眾號(hào)「早安英文」，回復(fù)“外刊”即可。更多有意思的英語(yǔ)干貨等著你！