Complete the following statements with proper words or expressions according to the course book.
In English, bound roots are either Latin or Greek. Although they are ( ) in number, their productive power is amazing.
【正确答案】：LIMITED
【题目解析】：在英语中，粘附词根要么是拉丁文，要么是希腊文。虽然他们的数量有限，但他们的生产能力是惊人的。
