a. subject to change or variation
a. 不稳固的, 摇摆的, 不稳定的, 易变的, 不安定的, 不规则的, 古怪的, 无常的
vt. 使不稳定, 使不安定, 动摇
1. The boat was unsteady in the rough water.
小船在汹涌的水面上摇摇欲坠。
2. She felt unsteady on her feet after the long hike.
长途徒步后，她觉得站立不稳。
3. His unsteady hands made it hard for him to write.
他手抖得厉害，写字很困难。