black draught
- 黑色拉力：一种指黑色的拉力或拖力，通常用于描述物体之间的力量作用。
Black draught
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abstract:
A black draught was a saline aperient mixture used, along with a blue pill, as a purgative in the 19th century and well into the early part of the 20th century, with veterinarians prescribing these to constipated cattle and horses.
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