Just like an electric screwdriver pulls into a piece of wood, so these treads would cruise along the ground, regardless of terrain.
就像电动螺丝刀钻木一样，这些踏板可以在地面巡航，不必担心地形。Drilling wood to make fire is the greatest discovery of primitive man. Drum is an important tool to vent and express.
钻木取火是原始人类最伟大的发现，鼓是湘西少数民族表情达意，宣泄情感的重要载体。Ape men in remote ages thought up the idea of drilling wood to make fire by friction.
远古时代的猿人发明了钻木取火。any of numerous nonpasserine insectivorous climbing birds usually having strong bills for boring wood.
多种非雀形目的食虫攀缘鸟，通常有用于钻木的强硬的喙。This fact sheet does not cover treatment against woodworm and other wood boring insects.
这份资料并没有介绍如何处理木蛀虫以及其他钻木昆虫。Inspired by the known method used by the ancients to drill wood to make fire, Vincent Gobin created this gadget.
广为人知的古人钻木取火的方法激发了文森特-戈班的创意灵感。Reamers and forstner bit are below that, center punch and drills to the right of those.
钻木嘴和平底钻嘴在其下方，冲子和钻头在其右侧。It makes them easier targets for borers , and shows if the insects are nearby.
这使得它们更容易成为钻木虫的目标，以此来判断虫灾是否临近。Let's look up from the part of drill : drill, wood pole and lance head.
我们从这只矛的钻部向上看：钻，木杆和矛头。