jamproof

例句：

1. 1. The old wooden door is jamproofagainst the weather.
   这扇旧木门能抵御风雨。
2. 2. The new car has been jamproof tested before it was released.
   这款新车在上市前经过了严格的耐久测试。
3. 3.The company's reputation is jamproofif they maintain their promises.
   如果这家公司坚守承诺，它的声誉是坚不可摧的。