最常用的是：His brother is good at swimming.
此外还有：His brother does well in swimming.
His brother is outstanding in swimming.
His brother is skilled in swimming.
His brother excels in swimming.
His brother specializes in swimming.
最常用的是：His brother is good at swimming.
此外还有：His brother does well in swimming.
His brother is outstanding in swimming.
His brother is skilled in swimming.
His brother excels in swimming.
His brother specializes in swimming.