- stout
- 坚固: firm; solid; sturdy; strong
- 坚固: firm; solid; sturdy; strong 坚固的基础 solid foundation; 坚固的大厦 a substantial building; 这座桥造得很坚固。 this bridge is very solidly built
- 顽固之人: stiff neck
- 变坚固: indurate; solidify; strengthen
- 不坚固: unsoundness
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