New words：

assist [əˈsɪst] v. 协助；帮助
assistance [əˈsɪstəns] n. 帮助；援助；支持

Sample Sentences：

Can you ​​assist​​ me carry this box?
The nurse ​​assisted​​ the doctor during surgery.

He can walk only with the assistance of crutches.
She offered me practical assistance with my research.

practical [ˈpræktɪk(ə)l] adj.实际的；切实可行的；真实的；客观存在的

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