同学们好 is commonly translated into English as "Hello, classmates!" The phrase comes from the Chinese language, where 同 (tóng) means "same" or "together," 学 (xué) means "study," and 们 (men) is a plural marker. Some possible English examples of this phrase could be:

"Hello, classmates! It's nice to see everyone here today."

"Good morning, classmates! I hope you're all ready to learn."

"Hello, classmates! I have an important announcement to make."

Note that in English, this phrase is typically used in a classroom or educational setting, where people are studying together and are considered to be classmates. It is a polite and friendly way to greet your fellow students.