The engineer drew a diagram of the bridge.工程师绘制了一幅这座桥的示意图。 This book has diagrams showing the parts of a car engine.这本书有汽车引擎构造的示意图。 He drew a diagram to show us how to get to his house.他画了一张简图告诉我们到他家怎么走。 The book uses simple diagrams to explain the rules of chess.这本书用简图来说明国际象棋的规则。