There was a long line at the station.

He was waiting in line.

He is good at algebra.

He found the target and shot the arrow.

Personally, I think this movie is the best.

A row vector is one of the basic concepts in linear algebra.

In order to solve this problem, you need to understand the concept of the zero vector.

A zero vector is a vector where all elements are zero.

This problem can be solved using the principle of linearity.

Roundworms are an important part of the soil and contribute greatly to the health and fertility of the soil.