filth
n[U]
1 disgusting dirt 肮脏; 污物
Look at the filth on your trousers! 看你裤子上的脏东西!
2 offensive and obscene words, literature, magazines, etc 下流的言语、 文学、 杂志等
How can you read such filth? 你怎麽能看这种乌七八糟的东西?
That's easy. I can do that tomorrow. I'll bring my drill.
那容易。我明天就做。我把钻头带来。
Once the oxygen content of the air had risen to 25% it was ready to burn.
一旦氧气在空气中的含量达到25%,它就要燃烧。
From this we get the expression to make a beeline for someone or something, which means to go quickly along a straight direct course for someone or something.
从这里我们得到一条短语"to make a beeline for someone or something,意思是迅速地沿着一条直线向某人或某物走去。