imperforate tracheary cell

例句：

1. 1.The glass is imperforate andcannot be broken by hand.
   这玻璃是不透的，不能用手打破。
2. 2. The soilis imperforate, which makesit difficult for plants to grow.
   土壤不透，使得植物难以生长。
3. 3. Thewall was made of imperforate stone, whichmade it very strong.
   这堵墙是用不透的石头砌成的，非常坚固。