![英語美文:A Sense of a Goose]( "英語美文:A Sense of a Goose")
- Whenyouseegeeseflyingalongin"V"formation,youmightconsiderwhatsciencehasdiscoveredastowhytheyflythatway.Aseachbirdflapsitswings,itcreatesanupliftforthebirdimmediatelyfollowing.Byflyingin"V"formation,thewholeflockaddsatleast71percentgreaterflyingranget...
- 12209
學者齋