maple of eastern and central North America having three-lobed to five-lobed leaves and hard close-grained wood much used for cabinet work especially the curly-grained form; sap is chief source of maple syrup and maple sugar; many subspecies
rock maple的用法和样例:
例句
Maple syrup is made from sap extracted from the sugar maple tree. 槭糖浆是用糖槭树中提取的树液制成的。