This is a once in a lifetime opportunity, so please don't miss it.

This is truly a once in a lifetime opportunity.

He is an expert in nuclear physics.

He said 'friend' as a noun ending for me.

Nuclear fission is a powerful process that generates energy.

The colossal squid is the largest squid living in the deep sea.

Saturated fatty acids may increase the risk of heart disease.

He found forensic evidence.

The steepest descent method is one way to solve optimization problems.

Based on the Air Pollution Control Law, factories must strengthen the management of exhaust gases.