very clear and helpful, thank you.#qw&Y k \5Ee4\(o)C3I
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I think it is better to make a simple record before the calling.

Thank you for your kindly! It very useful for me !:)

very practical, but depends on your English level.

thanks for your sharing...by the way,is there all chinese?

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y7x6DvW)O9B;V thanks!

from the layout of your article, I think it has been put in google blog.:) 8v8n$~$PG&^
Thanks for your share