Please pack the glassware in firm boxes so nothing breaks during shipping.

請把玻璃器皿裝在堅固的箱子裡，以免運送途中破損。

The hotel guest asked for a firm mattress because soft beds hurt his back.

這位飯店房客要求一張硬一點的床墊，因為軟床會讓他背痛。

Our new office chairs have firm cushions that support employees during long meetings.

我們新的辦公椅有結實的坐墊，能在長時間開會時支撐員工。