After sitting through the four-hour budget meeting, my back began to stiffen badly.

坐了四個小時的預算會議後，我的背開始嚴重僵硬。

The adhesive on these shipping labels stiffens within minutes, so apply them quickly.

這些出貨標籤上的黏膠幾分鐘內就會變硬，所以要盡快貼上。

On long overnight flights, passengers' legs often stiffen unless they walk the aisle regularly.

在長途紅眼班機上，乘客若不定時在走道走動，雙腿常會變僵。