时代变化 changing times
替代变量 Substitution Variable ; proxy variable ; substitute variable ; Substitution Variables
时代变迁 Change of the time ; The change of times ; Changing times ; Changes of times
迭代变量 iteration variable
前早古生代变质岩 pre-early paleozoic metamorphic rocks
时代变革 times transformation
中生代变形 Mesozoic deformation
迭代变分法 iterative variational method
迭代变换法 iterative transform
滴滴涕在20世纪70年代被禁止使用，部分原因是它已被认定是鸟蛋变脆的罪魁祸首，造成了鸟类数量的严重下降。
DDT was banned in the 1970s, in part because it had been found to be weakening bird eggs, resulting in serious population declines.
但是，这一代人的变老同时会给美国带来问题。
At the same time, however, the boomers' ageing will create problems for America.
四分之一个世纪过去，这座城市变的更为庞大：它在20世纪90年代在Broadgate东部几英里远的金丝雀码头建立了第二个金融区。
A quarter of a century on, the City is far bigger: it established a second cluster in the early 1990s at Canary Wharf, a few miles east of Broadgate.
应用推荐