1、
When they got to Montana, they put down roots and built a life.
到了蒙大拿后，他们便在那里扎根并过上了新生活。
《柯林斯高阶英汉双解学习词典》
2、
3、
The first vascular plants took advantage of the abundant water, and put down roots.
最早的维管植物趁着水分充足之利向下扎根.
互联网摘选
