无法了解的

The power supply part, as a result of the windsail mask, we are unable direct-viewing understanding it to supply power the part complete picture.

供电部分，由风罩遮挡，我们无法直观了解到它供电部分全貌。

In a ten-foot dingey one can get an idea of the resources of the sea in the line of waves that is not probable to the average experience, which is never at sea in a dingey.

在一条十英尺船上，一个人可了解大海如何风作浪；而对一般从未乘船漂海人来说，这是无法了解。