People often confuse undertow, which is actually a strong backwash and rip currents.

人们经常混淆回流和离岸流，回流其实是一种强烈的反冲力。

The subdural space plays a major role in venous blood drainage in the brain.

硬膜下隙在大脑静脉回流中重要作用。

Increased blood flow to the brain is helpful.

增加血液回流大脑是有益的。

The chocolate fries are McDonald's Japan’s attempt to reverse poor sales.

麦当劳试图以新菜单让顾客回流。

But it's not pure seawater that comes back out.

但回流出来的并不是纯海水。

They have just half an hour before the tide comes back in.

在潮水回流之前他们只有半小时。

In turn causing the water to back up potentially leading to flooding.

从而导致水回流，并可能引发洪水。

It’s a crucial if temporarily backward step.

这是水暂时性回流的重要一步。

Both vena cavas [sic] are veins, which bring blood towards the heart.

上、下腔静脉均为静脉，运送血液回流到心脏。

As the sea steadily flows back, it lifts the huge blocks of ice over their heads.

当海水逐渐回流千斤重的冰块。

And so, warm water is spilt all the way over to the east side of the Pacific.

表层暖水回流至太平洋东海岸。

Compression of the subclavian vein decreases blood drainage from the arm in hand, leading to edema.

锁骨下静脉受压造成手臂和手部血液回流减少，导致水肿。

And all of the goods they would end up producing would flow back to New Orleans.

他们产的所有商品最终都回流到新奥尔良。

Eventually, the blood in the venous sinuses drains into the internal jugular vein and returns to the heart.

最终，静脉窦中的血流回流至颈内静脉，回流至心脏。

Return flow of the water down the beach is called backwash, which is commonly called undertow when the pull is strong.

水流顺着海滩回流到海洋中被称为回流，如果推力很大的话，通常被称为退浪。

Superficial veins drain blood into deep veins, which rely on the skeletal muscle pump to move blood forward.

浅表静脉回流至深静脉系统是通过骨骼肌的肌肉泵作用完成的。

What is more, the repatriation of profits by American firms would draw resources away from their subsidiaries abroad.

更为重要的是，美国企业的利润回流将各种资源抽离它们的海外分公司。

Finally, we will make it easier for companies to bring back trillions of dollars that they are now keeping overseas.

最后，我们将使企业数万亿海外资金的回流更加容易。

Portal hypertension can also cause blood to back up into the spleen causing congestive splenomegaly, meaning the enlarged spleen.

门静脉高压症还能导致血液向脾脏回流，造成充血性脾肿大，即扩大的脾。

When stomach juices back up into the esophagus, the acid can cause a burning sensation in the chest and throat.

当胃液回流进食道, 酸引胸部和喉咙的烧灼感。