We need to combine our forces to make this project successful.

That plan is based on rational thinking.

Please research the interaction between these two drugs.

An old person was playing with his grandchild in the park.

Our school's motto is 'Knowledge is power.'

In Japanese, honorific language is an important way to show respect to others.

Using abbreviations makes the sentence shorter.

I'm thinking about what to do on the weekend, but I want to find some new entertainment.

Please check before you throw away the eggshell.

What is this mixture made of?