upper course

• 上层

upper course的用法和样例：

例句

1. The plates on the upper shelf were beyond my reach.
   上层架子上的盘子我伸手拿不到。
2. He locked his diary in the upper drawer.
   他把日记锁在上层抽屉里。
3. My hometown is in the upper reaches of the river.
   我的家乡在这条河的上游地区。
4. Sediment has been washed down from the upper lake.
   湖泊上游带下许多沉积物。