When he tried to ride the horse, it bucked wildly.当他试图骑上这匹马时, 它突然狂暴地跃了起来.The plane bucked a strong head wind.飞机顶着强烈的逆风飞行.The mayor bucked at the school board's suggestion.市长坚决反对教育委员会的建议....
Ptolemy charted more than 1000 stars in 48 constella-tions.托勒密绘制了48个星座1,000多颗恒星的星位图。Ptolemy's model of the universe with the Earth at the center.托勒枚的以地球为中心的宇宙模型.Is the most famous astronomer Ptolemy.最为著名的天文学家是托勒密....