The bobsled run is built out of wood not metal and hidden among trees.

雪橇道是用木头而不是金属建造的，隐藏在树木中。

youdao

Nanoparticles of metal do not have the same colour as that metal does in bulk.

纳米金属微粒的颜色和金属块不一样。

youdao

Further imagine that this pipe is not made of metal but a transparent magnetic field.

接着再想象一下，这样的管道不是用金属做的，而是一个透明的磁场。

youdao

So, one difference between photoelectron spectroscopy and, for example, the photoelectric effect is that in this case, we're not just looking at one energy level, which is what we were looking at from the surface of a metal, now we're talking about this gaseous atom.

光电子能谱与光电效应的不同点在于，以这种情况为例，我们不只关心一个能级，就像原来在金属表面那样，现在我们研究的是气体原子，所以，我们可以从原子中。

麻省理工公开课 - 化学原理课程节选

It was a teaspoon of water in a test tube, not a mass of silicon, metal and plastic.

FORBES: DNA May Make Computers, Not Run Them

For starters, that spun back is now made of plastic, not metal, so although it looks like the Prime and Zenbook line, the build quality isn't quite as impeccable.

ENGADGET: ASUS Transformer Pad TF300 review

Lukwerks, which can accommodate up to six cameras and is not the name of an '80s metal band, uses the HomePlug system to avoid any WiFi setup, security and reliability hassles.

ENGADGET: Switched On: Creep spy for the cheap guy