plastic core

例句：

1. 1. The new design has a plastic core that is easy to clean.
   这款新产品有一个塑料核心，易于清洁。
2. 2.The plastic core of the container is strong enough to hold liquids.
   容器的塑料核心足够强，可以容纳液体。
3. 3. The plastic core was designed to reduce weight and improve durability.
   塑料核心的设计旨在减轻重量并提高耐用性。