Hypertension was the first risk factor.

高血压为首位危险因素。

youdao

youdao

The effect was first noted in 1858 by William Farr, who wrote that widows and widowers were at a much higher risk of dying than their married peers.

1858年，威廉·法尔（William Farr）首次发现了这一效应，他写道，寡妇和鳏夫的死亡风险比已婚同龄人高得多。

youdao

"First off,there is the infectious disease risk because if you use human blood there's a lot of transmissible diseases.

VOA: special.2009.08.03

The first one is, I might say, a long-term risk theme.

我要说的第一个是，长期风险。

耶鲁公开课 - 金融市场课程节选

Opposition Republican leaders agree on the need to raise the borrowing limit by August second or risk the nation's first default.

VOA: special.2011.07.15

The first concerns the risk of insolvency.

ECONOMIST: Investment banking: Is there a future? | The

The consequences of that are serious, as the first time in our history, and for the first time we risk default and we have obligations that exceed our capacity to fulfill them.

WHITEHOUSE: Press Briefing

The first is to take the sovereign risk of the country in which the borrower is based and put the bank into the next category down.

ECONOMIST: Banking regulation