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Onion skin: Light weight cockle bank paper often used for airmail stationery.
洋葱纸: 常作空邮信纸用的轻身绉面的‘高级打字纸’.
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Attention: Please do not write anything on the teaching stuff or cockle it.
注: 试听期内请勿在资料上涂写或折皱,否则不予退款.
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