Oestrogen helps to keep open the artery carrying oxygen-rich blood to the foetus.

雌激素可使动脉血管扩张，含氧量高的血液得以流向胎儿。

youdao

WHO reports that 26 hospitals including three specialized tuberculosis hospitals have been destroyed or are too dangerous to keep open.

26所医院毁坏 世卫组织报告，包括3所结核病专科医院在内的26所医院已经毁坏或太危险以致难以继续开张营业。

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In return, Mr Marchionne has promised to keep open Opel's three main assembly plants in Germany, although there are fears for factories in Belgium and Britain.

作为回报，马尔基·奥尼已经承诺不关闭欧宝在德国的三大主要的汽车组装工厂，尽管有人担心欧宝在比利时和英国的工厂将被关闭。

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The legislature would have the power to keep the territory open to slavery and,in time,help it become a slave state.

VOA: special.2009.04.30

And it just gonna be... I really look forward to having someone who I can keep speaking to, keep learning from, and keep sharing my ideas with, and keep having that open, just an open door.

将会是，我非常期待,能够有一个像他这样可以一直聊天，一直学习，分享我们的看法，一直可以对他敞开心门。

普林斯顿公开课 - 人性课程节选

Just keep your, keep your mind open to whatever things you can learn and,

要做到思维开阔，尽自己的最大努力，获取新的知识，

想进布朗的话 - SpeakingMax英语口语达人

But it also wants to keep open the possibility of exporting its own transgenic products.

ECONOMIST: Genetically modified free trade

It has about 1, 500km (940 miles) of border with the three countries, which it would like to keep open.

ECONOMIST: Mikulas Dzurinda, Slovakia��s turn for the better

Barton made his debut in November against Morocco but appears keen to keep open his options of playing for England.

BBC: David Healy and Liam Boyce in NI squad for Scots clash