The lowerreachesof the river are navigable for steamers.
这河的下游能够行驶轮船。
《新英汉大辞典》
2
The scenery here surpasses that of the lowerreachesof the Changjiang River.
此处风光赛过江南。
《新英汉大辞典》
3
In the lowerreaches, where the current slows, the natural accumulation of sediment in the riverbed has caused the river to change course often in the past.