there's always room for improvement.が基本形です。1:02 there's always room for a little improvement.
http://www.youtube.com/watch?v=27R8kour-eE 3:23 there was still a lot of room for improvement.まだまだ直せるところはいくらでもある
http://bridge-english.blogspot.com/2010/04/blog-post_03.html 甘い物は別腹を英語でなんと言うか？
http://www.youtube.com/watch?v=mUZhIIJGYXQ 1:20 they say there's still room for improvement. 同性愛間の結婚はもっと良くなる
http://www.youtube.com/watch?v=e6sYhOcDyr8 0:51 there's still room for improvement.
