Լʲô˼-NASAǻڱǡԵ Ѽ2꣬ѧϰƳ30ѵӪ ɣʮ조ҩѧоڱйƶ̲ҺԼԼأֻ涯ʮ˶ƶ£ʱǻ˽ζҸΡӼΡŶӻ ߺӼ40Ԫ顢顢顢ʦͽ顭 ҹ棬թƭʽ ѧ߷ʶͳƴ911ʧҵ2.8% ҵ1.2%ٰ鵥עҺУйƶ̲ҺԼԼءͳҽɫƷຣȦʵҽۡСðץ⼸ҪСðץ⼸Ҫɽϵݴүǡ֡㽭ԡܡȺŸĸԪ߶ ڵϵġƭ֡άȨ ռϷ硢տߵȼ·ӹ...ɹܷҩߵIJ-Լ˴-