SK-C2 Field Trip

California  加州
Field Trip  实地考察
Natural Bridges State Beach  天然桥国家海滩
Santa Cruz, California  圣克鲁斯，加州
It's Welcome Back Monarchs Day! 这是欢迎返回君主节！
Thousands of monarch butterflies fly to Natural Bridges State Beach every fall.  数千只君主蝴蝶每年秋季飞往天然桥州立海滩。