成年奶牛有犄角。A mature cow has horns.5头奶牛在一棵大橡树旁悠闲自在地啃着青草。Five cows graze serenely around a massive oak.奶牛突然尥起了蹶子。Suddenly the cow kicked up its hind legs....
先辈们的丰碑最能奋勉人心的.The monuments of men's ancestors were the most impressive exhortations.人们失去了他们先辈的朴实,他们应该为此而感到懊丧.One may regret to have lost the simplicity of one's forefathers.他跟随着先辈的足迹前进.He followed in the steps...
They're happy to stay in the same old groove.他们乐于墨守成规.The cupboard door slides open along the groove.食橱门沿槽移开.My life seems to be in a groove. I do the same things day after day.我的生活似乎很单调, 日复一日地干着同样的事情....
地球学又分为四大类, 即地理学, 地质学, 地球物理学和测地学.There are four major disciplines in earth sciences, namely geography, geology, geophysics and geodesy.甚长基线干涉测量 ( VLBI ) 是天文学和测地学研究中的重要观测技术之一.The Very - Long - Baseline Interferometry ( VLB...