n. a system of body parts that together serve some particular purpose
n. a brief treatise on a subject of interest; published in the form of a booklet
词态变化
复数形式:tracts
常见例句
1
It signifies from, away , separating, or departure, as in abduct, abstract, abscond
2
v take away to an undisclosed location against their will and usually in order to extract a ransom v pull away from the body
3
consider abstractly or theoretically v
4
give an abstract (of) a
5
consider abstractly or theoretically v make off with belongings of others v consider apart from a particular case or instance v give an abstract (of) s lost in thought
