tract-主題

tract

[trakt]

n.大片土地, 器官系統,[解]道, 束 
n.小冊子

例句與用法：

Developing a30-acre tract.

開拓三十英畝土地

A tract that may be owned, together with everything growing or constructed on it.

地域包含生長於其上的所有的東西或建築的一片土地

A line established by sighting in surveying a tract of land.

橫斷線在測量一塊土地時通過目視確定的線

He took many photos of the wide tracts of desert in North Africa.

他拍了許多關於北非的廣大沙漠的照片。

英文解釋:

名詞 tract:

an extended area of land

同義詞：piece of land, piece of ground, parcel of land, parcel

a system of body parts that together serve some particular purpose

a brief treatise on a subject of interest; published in the form of a booklet

同義詞：pamphlet

a bundle of myelinated nerve fibers following a path through the brain

同義詞：nerve pathway, nerve tract, pathway

以上來源於大辭典