我的朋友很强壮用英文怎么说

"My friend is very strong" 可以用英文表达为 "My friend is very muscular" 或 "My friend is very buff"。

"Muscular" 来自拉丁语 "musculus"，意为肌肉。例句：He has a very muscular body. 他有一个非常健美的身体。

"Buff" 来自英语中的 "buffet"，意为磨练。例句：He works out regularly to stay buff. 他经常锻炼来保持健美。