Bill and Jane were coasting on a hill. Down the hill went the sled. Bill steered. Jane held on tightly.
比尔和简正在山上滑行，他们的雪橇从山上滑下来，比尔驾驶着雪橇，简紧紧地抓着雪橇。
2
Then, multi-ample coasting-own data and power calculation method were applied to verifying the results. The results show that the two-stage coast-down test method is correct and feasible.