button

The top button of my shirt fell off, and I need to sew it back.

(Chinese) 我衬衫最上面的纽扣掉了，我需要把它缝回去。

She fastened the buttons of her winter coat to keep out the cold.

(Chinese) 她扣上冬装外套的纽扣以抵御寒冷。

Press the red button to stop the machine in an emergency.

(Chinese) 在紧急情况下按下红色按钮停止机器。

The elevator moved up after I pushed the button for the tenth floor.

(Chinese) 我按下十楼的按钮后，电梯开始上升。