The first paper was made from the bark of the mulberry tree.
A、driedwoodB
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Blue－greenalgaegrowabundantlyinsaltmarshes.
Theflowerbudofawaterlily百合opensatsunsetsince.itsopeningistriggered(commence).bythedecreasedlight.
InthenortheasternUnitedStates,itrainsintermittently间歇地throughoutthespring.
Insectpestsareamongtheleadingcausesofcropfailure.
Batsfly,ratherthanglide,andthusaretheonlymammalscapableoftrueflight.
