xiǎo / qiú / shòu / dào / qīng / wēi / rǎo / dòng / hòu / jiù / huì / lí / kāi / bù / wěn / píng / héng / wèi / zhì

小球受到轻微扰动后，就会离开不稳平衡位置。

After a slight disturbance, the ball will leave its unstable equilibrium position.