at the bottom of sth
+of lake, sea, container在…的底部；+of garden在…的尽头
the observatory he built at the bottom of his garden他在花园尽头建造的天文台
+of stairs, cliff在…最低处
He sat at the bottom of the stairs.他坐在最下面一层楼梯上。
+of screen, page在…的最下端
at the bottom of page 40在40页最下端
His name is at the bottom of the list.他的名字在名单的底部。
+of street在…远端
the Cathedral at the bottom of the street街尽头处的大教堂