笔记

Level 3 

These people are at a dance party.

These foods are deep-fried and greasy.

If you need to pound in a nail, use a hammer.

Two inches is a little more than five centimeters.

Live on land ~ Live in the see

Birds are covered by feathers and are warm-blooded.

#Unlike animals, plants get the energy that they need from the sun.

He started to sweat and breathe quickly.

There may even be a good movie to watch.

Bladder, Kidney

Fossil fuels remain the largest source of energy for most countries

Hydropower comes from the kinetic energy of falling water

Words that are nouns or pronouns(主语从句)are used to represent objects.

Level 6 

The opposite of "inject"（注射，投入）——> remove, withdraw 

Things grow fast and fast ——> rapid, exponential（指数的）