knothole
n. 节孔
例句
Duty: Responsible for development and test of power and power knothole.
职责:承担电源和电源分配板的开发与测试。
Strengthening the knothole position arranging and design of the head, etc.
加强板的布置位置及其端头的设计等。
Next the wren—the one who discovered the knothole in the eave of the cabin—explodes into song.
接下来是鹪鹩放声高歌,正是他发现了小木屋屋檐上的节孔。