Bear market rallies typically begin suddenly and are often short-lived.

熊市反弹通常会开始突然，而且往往是短暂的。

youdao

The signs and symptoms of a stroke vary from person to person, but they usually begin suddenly.

该标志和中风的症状，因人而定的人，但他们通常会突然开始。

youdao

Suddenly, I saw her lips begin to tremble and tears begin to flow down her cheeks.

突然，我看到她的嘴唇开始颤抖，眼泪开始从她的脸颊流下。

youdao

And then suddenly things begin to change.

事情突然开始发生变化。

哈佛公开课 - 幸福课课程节选

He was surprised himself when, in 1983, Begin suddenly left political life and he became prime minister.

ECONOMIST: Yitzhak Shamir

For people whose hearts sometimes suddenly begin racing, having one of these things in your chest is like having an ambulance crew a few inches away.

FORBES: Bad medicine

They say with President Bush well into his second term and facing strong opposition on Iraq there's little incentive for Iraq's insurgents to suddenly begin cooperating with either the American-backed government in Baghdad or the Sunni neighbors.

NPR: Rice, Syrian Official Discuss Porous Iraq Border