Why Do Wind Turbines Have Three Blades

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torque = a force that causes something to rotate (= turn in a circle)

drag = a force acting opposite to the direction of motion fall apart = break up withstand = remain undamaged counterweight = a weight that is as heavy as something else, so that the two objects can balance robust = sturdy(=strong enough to withstand ) in construction take into account = to think about choppy = often changing, especially getting worse, in a way that is hard to predict gloss over = to skip
EFL subset that concentrates more on language in context than on grammar and language structures. It covers topics from accounting or computer science to tourism and business management. "Specific" means the studying through a field that is already known and relevant to a student.