奶奶虽然年纪大了，但永远保持一颗年轻的心。我弟弟性格开朗，虽然学习不好

奶奶虽然年纪大了，但永远保持一颗年轻的心。我弟弟性格开朗，虽然学习不好，但在其他方面有很多特长

結果 (英文) 1:

Grandma is old, but always maintain a young heart. My brother and good humor, although not academic, but in others there are many specialist

結果 (英文) 2:

Grandma though older, but always maintain a young heart. My brother cheerful, although learning is not good, but there are a lot of expertise in other areas

結果 (英文) 3:

Grandma is old, but always keep a young heart. My brother has a bright and cheerful disposition, although the study is not good, but there are a lot of expertise in other areas