Definition: helping you to do or achieve something Level: A2
这本词典对我的英语学习很有用。
This dictionary is very ___useful for my English study.
这个应用程序对学习新单词很有用。
This app is ___useful for learning new words.
你的建议非常有用，谢谢！
Your advice was very ___useful, thank you!
