They're extremely hard on equipment, mainly because they are made out of hard maple and then a lot of glue.

它们对设备要求极高，主要是因为它们是用硬枫木和大量胶水制成的。

Today the chief maple sugar center is in the northeastern states. Both the sugar and the syrup are products of the hard maple or sugar maple.

今天，主要的枫糖中心位于东北部的大州，糖和浆都是硬枫木或糖枫树制作而成的。