Surprisingly, calcium supplements may be contaminated with lead, because the sources of calcium in supplements—like seashells or cow bones—are contaminated.

令人惊讶的是，钙的补充品中可能受到铅的污染，因为主要的钙补充品像海贝和牛骨都可能被污染。

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Park two Humvees at an Angle, lead a cow into the gap and lash it to a bumper by its nose.

两辆悍马呈角度停放，牛鼻子上的绳子系在保险杠上，引导牛进入山谷。

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The structure of placenta and unsuitable raising management often lead to retention of the afterbirth which it brings to the greatest loss of the reproduction of cow industry.

牛属于子叶型胎盘，这种胎盘的结构特点和饲养管理的不当，常常导致奶牛胎衣不下发生，给乳牛业的生产繁殖带来极大损失。

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This major reversal puts Chevron squarely in the lead of the American Trade Consortium as the 'cash cow' on which the other ventures depend for profit repatriation.

CENTERFORSECURITYPOLICY: Center For Security Policy

College football is the cash cow for major Division I athletic programs, and this is why the men who lead these programs are handsomely compensated.

FORBES: College Football Coaching Salaries Grow Astronomically Due to Escalating Media Rights Deals