Thecontrolsofmostmodernairplanescanbeoperatedeithermanuallyorautomatically.
A、bythebookWithlasersscientistscanprobemanyphysicalprocesses,suchascombustion,oncebeyondourken.视野
Eyespots,themostrudimentaryeyes,arefoundinprotozoan原生动物flagellates鞭毛虫,flatworms扁形虫,andsegmentedworms片段蠕虫.
Anoversight遗漏(miss,overslaugh)inproofreadingoftenresultsinprintederrors.
Despitetheproliferationofotherfastermodesoftransportation,therailroadsremainthelargestcarriersofintercityfreightintheUnitedStates.
Blue－greenalgaegrowabundantlyinsaltmarshes.
