評論
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1.terrain n．地勢，地形(the physical features of a tract of land)
詞根記憶：terr(地)+ain--地勢，地形
例：Mongolia's terrain is suitable for grazing native herds.
派生詞：terrestrial(a．陸地的)
2.terrestrial a．地球的(of the earth);陸地的(relating to land)
詞根記憶：terr(地)+estr+ial--地球的；陸地的
例：Some small terrestrial animals can achieve high speeds.
同根詞：territorial(a．領土的；區域的)
3.territory n．地區(an area of land)：領土(domain)
詞根記憶：terr(地)+itory--地區；領土
例：Some explorers traveled in Native American territory in the early 19th century.// The empire regained its lost territory.
派生詞：territorial(a．領土的)：territoriality(n．領土權)
4.testify v.作證（to serve as evidence or proof）；證明（to attest）
詞根記憶：test(證據)+ify--用證據來證明--作證：證明
例：He testified that the car was being driven slowly at the time of the accident.
5.testimony n．證詞(a solemn declaration usually made orally by a witness under oath in response to interrogation by a lawyer or authorized public official)
詞根記憶：testi(=test證據)+mony--證詞
例：John's testimony contradicted the defendant's testimony.
6.theme n．主題：題目(subject)
例：theme park主題樂園//Guilt and Punishment is the theme of the story.
7.theophylline n.茶堿(a colorless crystalline alkaloid, derived from tea leaves or made synthetically)
例：Caffeine and theophylline tend to have depressive rather than stimulatory effects on human behavior.
8.theoretical a．不切實際的(existing only in theory)；理論（上）的(relating to or having the character of theory)
詞根記憶：來自theory(n．理論)
例：Theoretical literature offers conflicting views on whether nonprofit hospitals are less financially efficient.
派生詞：theoretically( ad.理論上)
同根詞theorist(理論家)
9.therapeutic a．治病的(of the treatment to diseases)
詞根記憶：therap(照看，治療)+eutic--治病的
例：Ancient Romans found it therapeutic to bathe in cold milk, crushed strawberries, or black caviar.
同根詞：therapist(n．臨床醫學家：治療學家)
v. 證明，作證，為 ... 作證
