non-stratified

例句：

1. 1.The soil is non-stratified, so it's easy to dig through.
   土壤是分层的，所以很容易挖穿。
2. 2. The rocks are non-stratified, so they don't break apart easily.
   岩石是分层的，所以不容易破碎。
3. 3. The soil is non-stratified, which makes it difficult for plants to grow.
   土壤是分层的，这使植物难以生长。