staple

There are many kinds of staple food in China, like rice, flour, sweet potato.

contain

This medicine contains some kinds of important active ingredients.

powder

Some strange white powder is on the ground.?

glucose

Glucose can give people energy.

ethical

We have to consider ethical issue in commercial actions.

conscious

He was conscious when he was running away.

imply

He implied someone wanted to prevent us to get the contract because he had accepted the bribe from other company.

debate

Scientists are debating what happened before the big bang. It is hard to be believed five years ago.

contaminate

Blood contaminated his clothes. He fell down with heavy breath.

ambassador

She is the brand ambassador of many brands.

nutritious

The grass is nutritious to these sheep.

method

We have to find a method to improve the efficiency of the process.