The proper extension point has to be identified, and an extension must be defined.

正确的扩展点应该经过标识，并且必须对扩展进行定义。

youdao

Sir, please hold while I search for the proper extension.

先生，请稍等，我在查找分机号。

youdao

The best reason to go on extension is if you need time to consider proper reporting, get professional advice, and file an accurate return.

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Self control, proper attitude, courtsy for everyone at work, and extension of helping hand towards others, could all become positive ingredients for one to feel at home with the environment at work.

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