他喝了太多咖啡，现在手有点发抖。

He drank too much coffee and now his hands are ___shaky.

谈判后双方达成的协议看起来很不稳固。

The agreement reached after the negotiation seems ___shaky.

她的声音听起来有点犹豫，似乎对自己的回答不太确定。

Her voice sounded a bit ___shaky, as if she wasn't sure about her answer.