图五：小李总是要前台多备一些「三角护翼」的信封，听的那个小丫头总是面红耳赤的，还是说「三角形封口」好点。
Fig5. xiaoli always blushed the receptionist while asking for more " gussets " envelopes stocked. just call them " triangle seals ", ok.
图五：小李总是要前台多备一些「三角护翼」的信封，听的那个小丫头总是面红耳赤的，还是说「三角形封口」好点。
Fig5. xiaoli always blushed the receptionist while asking for more " gussets " envelopes stocked. just call them " triangle seals ", ok.
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