birchn.桦树;桦木;用桦条抽打v.用桦条抽打
birch-tree桦树
birch camphor桦木脑
Birch sawdust桦木锯屑
Birch plywood桦木胶合板
birch tar oil桦焦油,桦木焦油
Birch veneers桦木单板
birch beer.桦木啤酒
birch bud oil桦芽油
Birch forests白桦林
birch extracts桦木提取液