This germicide can kill 99.9% of bacteria.

Please always sterilize this surgical instrument before use.

This instrument has already been sterilized.

This bacterium is resistant to antibiotics.

He used a spray to kill the bug.

He was arrested on suspicion of that murder.

9/11 is an unforgettable day in American history.

He developed a famous chemical agent.

This adhesive is very strong.

He is an expert in bacteriology.