base length

例句：

1. 1. The base length of the tree is about 20 feet.
   这棵树的基础长度大约是20英尺。
2. 2.The new model car has a longer base length than its predecessor.
   新款汽车的基础长度比前一代长。
3. 3. The scientist measured the base length of the sample to ensure it was within acceptable limits.
   科学家测量了样本的基础长度，以确保它在可接受的范围内。