brush up on

This will require that you brush up on your fish identification skills, but it's a small price to pay for protecting our fish, saving on groceries and limiting unexpected and urgent trips to the restroom.

For those hoping to brush up on their Tagalog during Filipino History Month, that means “I love you.”

Park officials said the thermal pool incident serves as a reminder for visitors to brush up on the 10 rules of what it calls the Yellowstone Pledge to protect themselves from the thermal pools, bears, bison and other potential hazards in the park.

Brush up on tipping etiquette, which varies from one European country to another — although tips are almost always less than is expected in the U.S.

A few hours before eclipse, Vogt joked that he had been too busy lately to brush up on any constellation patterns.