儿童通常在第二年学会说话。

Children usually develop ___speech in their second year.

头部受伤有时会影响一个人的说话能力。

A head injury can sometimes affect a person's ___speech.

为了清晰的沟通，拥有良好、清晰的口语能力很重要。

For clear communication, it's important to have good, clear ___speech.