He is good at expressing his feelings well.

He is a person of strong vanity who reads self-improvement books.

Reducing greenhouse gas emissions is important for environmental protection.

We need to evaluate the cost-effectiveness of this project.

We need to evaluate the cost-effectiveness of this project.

The photoelectric effect is a phenomenon where a material emits electrons after absorbing light.

There are no words to describe that beauty.

He is always grumbling about trivial things, it's really annoying.

He admitted that it is difficult to execute the plan, saying 'it is easier said than done.'

He is truly a person who embodies the saying, 'A man of virtue will naturally attract admirers.'