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Try to imagine that, we are outside the whole day.
After we come back home to wash our hands, it’s
always dirty, not to mention that if we work in the
factories or places with dust, our drinks just expose
the dusty air all day long, and we drink with the dusty straw.
Therefore, we change a little bit of the plastic straw
cover.All you need to do before you drink is, rip along
with the dotted line first, put straw in your drink of course,
and use the straw to poke out over the top of the circle
After you finish to drink it, just pull up the cover then
your straw will be in the cover.So your straw can keep
National Kaohsiung Normal Universit
National Kaohsiung Normal University
Di Xue Li,Cheng Yi Wen,Ya Chu Yang