to do something that causes a change in someone's situation
The Bible has greatly affected the lives of many people.

to do mathematical processes to find the answer to a problem
Sid calculated the amount of water he could carry in one bucket.

the repetition of a sound that occurs when sound waves bounce off something
Marcie shouted into the canyon but only heard her echo reply.

a scientific test that is performed to study something and see how it reacts to different conditions
The experiment consisted of several parts, beginning with the acid test.

a bright light that occurs for a very short time
A flash off to the right proved that the electric storm had already begun.

(항해) 농무 경적
The captain steered more carefully when he heard the bellow of the foghorn.

something that is heard; a noise
Even if there is no one to hear it, a tree falling in a forest still makes a sound.

the rate at which something or someone is moving
Most cars cannot travel at a high speed.

the loud sound that comes from the sky, usually during a storm, and is produced by LIGHTNING
thunder rolled loudly across the plain and frightened people and animals.

If a statement is vice versa, then its two main ideas are switched with one another.
Healthy lives lead to healthy habits and vice versa.