Vacillant
游移的, 摇摆不定的, 犹豫不决的
🗣️ 情景例句
You can listen to BBC or VOA news if you want to improve your listening.
如果你想提高听力，你可以听英国广播电台或美国之音的新闻节目。
How are you?
你好吗？
The life forms most likely to develop on a planet would be bacteria.
行星上最容易生存下来的是细菌。