birch tar

例句：

1. 1.The birch tree is a popular choice for building materials due to its durability and strength.
   由于其耐用性和强度，桦树是建造材料的一个受欢迎选择。
2. 2. Birch tar is used in the production of waterproofing coatings and sealants.
   桦树胶用于生产防水涂料和密封剂。
3. 3.The birch tar has been found to have antimicrobial properties, which makes it useful in medical applications.
   桦树胶被发现具有抗菌性质，这使得它在医疗应用中很有用。