layer in slot

例句：

1. 1.Please layer in the new material before westart painting.
   在我们开始绘画之前，请先添加新材料。
2. 2. The engineer carefully layered inthe new materials to ensure stability.
   工程师仔细地添加了新材料，以确保稳定性。
3. 3. The companyis planning to layer in more advanced technologyto improve its products.
   该公司计划添加更先进的技术来提高其产品的质量。