Gravity's strength depends on an object's mass, or amount of matter.

引力的力量的大小，取决于物体的质量，或物质的总量。

youdao

The mass of the object, the amount of matter it is made of, does not change.

物体是由物质组成的，物体的质量就是物质的总量，并不会改变。

youdao

Depending on the amount of matter coming down, you would more likely feel it first as a low and growing rumble.

我认为这要视塌下来的物质的数量，随着越来越多的岩块干冰下塌，一开始低沉渐渐变得隆隆起来。 就像你在珠穆朗玛峰或乔戈里峰上听到的雪崩的声音一样。

youdao

If dark matter particles exist, scientists say, they should be able to observe a small amount of light given off when they hit the nucleus of a xenon atom.

VOA: special.2009.07.21

Constant. Ooh, constant says, no matter what the length of the list is, I'm going to take the same amount of time.

这个算法用的时间是相同的，我不这么认为，如果我们创建一个十倍于以前大小的数组。

麻省理工公开课 - 计算机科学及编程导论课程节选

Okay, so 1 is a viable answer in some contacts that needs constant time, the same amount of time no matter what.

在需要常量时间的情况下,答案是1，不管怎样，总时间是,相同的。

哈佛公开课 - 计算机科学课程节选

Nevertheless, when the annihilation was complete, a small amount of matter was left over.

ECONOMIST: Particle physics makes sense, but it assumes too much

One theory is that there must have been some minute discrepancy in the amount of matter and anti-matter created.

BBC: The problem with anti-matter

The tiny quantum fluctuations that drove the expansion could also have given rise to small variations in the amount of matter from one place to another, seeding the later gravitational growth of stars and galaxies.

BBC: The first fractions of a second after the Big Bang