牛仔将病牛从牛群中剔除。
目的从牛血浆中制备高活力及高收率的凝血酶。
Purpose To prepare high activity and high yield thrombin from bovine blood.
第一步,把牛从坑里拽出来。
霍尔德斯说:“从遗传学上来讲,这只牛是我最好的牛之一。”
从我曾祖父那时候起,那片土地上就养着牛。
There have been cows in that field since my great-grandfather's time.
但是很快的牛回来,从他的作品占着茅坑不拉屎。
牛实际上是从天上来的神仙。
一天,一头牛从农场里跑了。
牛从牧场窜出,在公路上自由自在(到处)走动。
The cows had got out of the field and were (roaming) loose in the road.
从我祖父那时候起,那片地上就养著牛。
There have been cows in that field since my grand father's time.
扮成牛的幼儿找出从左边数第3个小朋友。
扮成牛的幼儿找出从左边数第3个小朋友。
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