u cannot differentiate the v/w sound

回答: Katie Couric The Best Advice I Ever Got, Part 22msmom2013-01-09 08:01:49

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thanks! Will pay more attention to these two sounds. -2msmom- 给 2msmom 发送悄悄话 (0 bytes) () 01/12/2013 postreply 20:20:53

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