听到拨号音后，就可以拨号码了。

When you hear the dial tone, dial the number.

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听到拨号音了吗？

Did you hear a dial tone?

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现在，您可以拿起听筒，听到拨号音，并开始打电话。

You can now pick up the handset, hear a dial tone and start making calls.

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将手柄从话机上向上提起后摘机，听到拨号音后即拨号。

Dial when you hear dialing sound after you pick the phone up.

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将手柄从话机上向上提起后摘机，听到拨号音后即拨号。

Dial when you hear dialing sound after you pick the phone up.

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