戴维免费提供第一次咨询。

David gives the first consultation gratis.

《柯林斯英汉双解大词典》

所有新生在第一次参加时均可免费获赠一支网球拍。

All new students will receive a free tennis racquet when joining for the first time.

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当我们第一次将鼠脑图谱免费放在网络上时，遭到了研究界的质疑。

When we first put the mouse-brain atlas online free, it was met by the research world with suspicion.

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