Meaning: Your safety is the most important thing, so always wear a helmet when riding a bicycle.
Choice of Words: Safety means the condition of being protected from danger or injury. First means before anything else.
Alternative Expressions
Be safe, wear your helmet.
Meaning: This means to be safe and wear a helmet on your head.
Choice of Words:Be is a verb that means to exist or to be in a certain state. Safe means to be protected from danger or harm. Wear means to have on your body. Helmet is a hard hat that you wear to protect your head. So, "Be safe, wear your helmet" means to be safe and wear a helmet on your head.
Put safety first, wear a helmet.
Meaning: This means to put safety first and wear a helmet on your head.
Choice of Words:Put is a verb that means to place or to move something to a certain place. Safety is a very important thing to remember when doing anything. First means before anything else. Wear means to have on your body. Helmet is a hard hat that you wear to protect your head. So, "Put safety first, wear a helmet" means to put safety first and wear a helmet on your head.