单词学习：unsteadiness 名词
unsteadiness
/ʌnˈstedinəs/
不稳定；不稳固；摇摆不定
The unsteadiness in his voice revealed his nervousness when he was talking to Teacher Gu.
他声音里的不稳定暴露了他在和顾老师说话时的紧张。
单词卡片
卡片已就绪
