Our new office chairs use foam cushions that keep their bounce after years of use.

我們新的辦公椅採用泡棉坐墊，用了好幾年仍能保持彈性。

The customer complained that the yoga mats had lost their bounce within a week.

這位顧客抱怨瑜伽墊不到一週就失去彈性了。

Before shipping, each batch of rubber balls is tested for bounce and durability.

每批橡膠球在出貨前都會測試彈性和耐用度。