There were no transistors in the box, no wires or tubes.

木盒里没有晶体管，没有电线，也没有真空管。

Then the blood comes back to the heart again through other pipes or tubes, which are called veins.

随后, 这些血液通过静脉血管流回到心脏之中。

For some people, it is enough to have oxygen sent through a face mask or tubes in the nose.

对有些人来说，通过面罩或鼻插管输送氧气就足够了。

These pipes or tubes usually are in each room.

这些管道或管道通常位于每个房间内。

11.1 ). The world-sheet of a closed string is a cylinder or tube (Fig.

11.1）。闭合弦的世界面是圆柱或管（图 1）。

Sometimes they need to be connected to a controller with wires or tubes, or they have a limited range of movements.

有时它们需要用电线或管子连接到控制器，或者它们的运动范围有限。

London — straddling the River Thames — is vast but everything we'll see is within a few minutes by taxi, bus or tube.

伦敦——横跨泰晤士河——幅员辽阔，但我们乘坐出租车、公共汽车或地铁只需几分钟即可到达所有景点。

A " rifle" (rifle) is a kind of gun that has a very long, what is called a " barrel, " or tube that the bullets are shot from.

（步枪）是一种枪， 它有很长的枪管， 也就是所谓的“枪管” 或子弹从中射出的管子。

The water turns into vapor or steam, and that vapor or steam is sent through certain pipes or tubes that go into the house or the building that warm the surrounding air.

水变成蒸汽或蒸汽，蒸汽或蒸汽通过某些管道或管道输送到房屋或建筑物中，使周围的空气变暖。