n.幾何；幾何學

Today we have a lesson in geometry. 今天，我們有一節(jié)幾何課。

Leon didn't finish his geometry homework because his mind kept jumping the track to think about the new girl in class. 利昂沒完成幾何作業(yè)，因為他思想總在開小差，想著班上新來的女生。

The boy puzzled his way through geometry. 那男孩煞費苦心地鉆研幾何學。