The pine reached to the proper height.

这棵松树的高度很合适。

youdao

The key is to separate the keyboard and the monitor so each can be placed at the proper height.

关键是要将键盘和显示器分开，这样两者可以分别放在合适的高度。

youdao

The hot-air balloon doesn't depend on power, but float by means of wind. Because the wind direction and speed vary with the height, the driver can choose the proper height as the flight required.

但是，由于风在不同的高度有不同的方向和速度，驾驶员可以根据飞行需要的方向选择适当的高度。

youdao

"It's important that your desk chair be at the proper height to reduce strain on your back, " he says.

FORBES: Magazine Article

"It's important that your desk chair be at the proper height to reduce strain on your neck and back, " he says.

FORBES: Magazine Article

She also stresses the importance of a stand that keeps the instrument at the proper height, since good posture is essential to proper technique.

WSJ: Digital Pianos: Great Performers for Tight Spaces