The sac is very strong, like a balloon filled with water.

这个囊很结实，就像是装了水的气球。

youdao

When the baby is about to be born, the sac bursts and all the fluid runs out.

孩子要出生时，这个囊就会破，羊水就会流出来。

youdao

On average, he said, one out of every 20,000 chicken eggs contains a small amount of salmonella that is deposited into the sac by the hen.

每2万个鸡蛋中会有一个鸡蛋带有少量沙门氏菌，这是由母鸡下蛋时分泌在液囊里。

youdao

And then, I'm going to skip down a little bit: Though she never again called back any image of the dead man to dress up, pose, talk to and make answer, neither would she lose a new compassion for the cul-de-sac he'd tried to find a way out of, for the enigma his efforts had created.

接下来，我会跳过一些内容往下说：,虽然她从没有想起过，那个死人穿衣、摆弄姿势、,说话和回答问题时的样子，她也不会失去对他的同情，对他尝试摆脱,无路可走的困境所付出的，谜团一般的努力。

耶鲁公开课 - 1945年后的美国小说课程节选

However, as more competition enters the market, the lower the SAC margins will get.

FORBES: Competition Could Pinch Netflix on Subscriber Costs

The SAC budgets in these companies may be enough to shake optimism in Netflix in coming quarters.

FORBES: Competition Could Pinch Netflix on Subscriber Costs

The former SAC trader, Mathew Martoma, is still facing a criminal trial and has pleaded not guilty.

BBC: SAC Capital fund pays $614m over insider trading