这个地球变得如此暴力,以致于它的模样是否会持续我们也不清楚。
The earth became so violent ____ ____ ____ ____ ____whether the shape would last or not.
设变量x,y满足约束条件x≥1x-y-4≤0x-3y-4≤0则目标函数z=3x-y的最大值为( )
—He is an outstanding leader who _______his reputation.
精子的变形过程中演变为精子的尾?( )