prophylaxis

"The protective helmet was essential for the construction worker. "

"It frustrates me to do all this work and then lose it all."

"The pitcher is launching the ball towards home plate. "

"I brush my teeth regularly to prevent them from turning yellow."

"During the crackdown, many opponents of the regime were arrested."

"Handwashing is important to prevent the spread of germs. "

"The new recruit was a strong and effective soldier, ready for basic training. "

"He still has nightmares resulting from the treatment he received from his captors."

"a fire prevention campaign"

"The tomato plants had some kind of disease that left their leaves splotchy and fruit withered."

"Railway crossings without gates are highly dangerous."

"The general's strategy for defeating the enemy involved a multi-pronged attack. "