The batteries had a life span of six hours.这些电池的寿命为6小时。They have extended the potential life span of humanity everywhere.世界各地人类的预期寿命均有所延长。It is a very pretty butterfly, with a 2 inch wing span.这是一只非常美丽的蝴蝶，翼展2英寸。...
There is no gainsaying his honesty.他的诚实是不可否认的.There is no gainsaying the fact that they have been responsible for a truly great building.不容否认的事实是，他们一手建起了一座真正伟大的建筑。There was no gainsaying the astronomer's knowledge a...