TPO1Lecture1: Contemporary artart fairs: 艺术博览会be keep at it: 坚持，不放弃Lecture3: ArcheologyNeolithic period: 新石器时代obsidian: 黑矅石rectangular: 矩形的hatchway: 天窗diagonal: 对角线plaster: 石膏hearth: 灶台，壁炉chimney: 烟囱soot: 煤烟，烟灰rib: 肋骨burial: n.埋葬layout: 布局；设计；安排；陈列physical artifact: 物理赝像；人工制品Lecture4: BiologyCereal Crops: 粮食作物marmot: 旱獭，土拨鼠Rodents: 啮齿动物，啮齿类ground squirrel: 地松鼠reside: 居住temperate climate: 温带气候hibernate: vi.冬眠hibernation: n.冬眠；蛰伏frost: 霜veget
