刚好在450英尺的等高线之下有3个缓坡。There were three moderate climbs to just below the 450 feet contour.等高线是用等间距图解描述构造形态的.Contours are graphic expressions with uniform spacing depicting a structure's character.正射摄影象片一般不带像地图所表示的等高线....
The city was entombed in volcanic lava.城市被火山熔岩掩埋。Neither of them had any idea how long the body had been entombed.他们俩谁也不知道这具尸体被埋葬多久了。It became entombed in the permafrost, where it remained until recently freed.它被掩埋在永久冻土层...