1) 翻译:他是在德国读本科期间提高了自己的德语能力。
It was during his undergraduate years in Germany that he perfected his German.
2) He has taken every opportunity to perfect his German.
1) 翻译:他是在德国读本科期间提高了自己的德语能力。
It was during his undergraduate years in Germany that he perfected his German.
2) He has taken every opportunity to perfect his German.