To wash vegetables in Engpsh, you can say "wash the vegetables" or "clean the vegetables." Here are a few examples of how you might use these phrases:

"I'm going to wash the carrots and potatoes before I cook them."
"Could you please wash the lettuce for the salad?"
"I usually rinse my vegetables under cold water to clean them before I eat them."

It's also common to specify the type of vegetable you are washing, for example: "I'm going to wash the broccop" or "I need to clean the bell peppers."