本期給大家簡單匯總了一下2021年托福考試當中的高頻詞匯，這些都是比較有代表性的單詞，希望對備考的同學們有所幫助！

1. Cluster n. 簇擁
選項同義詞：group
例句：The plant bears its flowers in clusters.
這種植物開花成簇。

2. Persistently adj. 持續地
選項同義詞：insistently
例句：The allegations have been persistently denied by ministers.
這些說法一次次地被部長們否認。

3. Aggregation n. 聚集
選項同義詞：accumulation    
例句：The aggregation of wealth by small groups of families caused social unrest.
少數家庭聚集財富造成了社會動蕩。

4. Augment v. 增加
選項同義詞：addto     
例句：While searching for a way to augment the family income, she began making dolls.
為求增加家庭收入，她開始做起了玩具娃娃。

5. Annihilate v. 消滅
選項同義詞：destroy  
例句：The human race has enough weapons to annihilate itself.
人類有足夠的武器滅絕自己。

6. Ambiguous adj. 模糊的
選項同義詞：unclear   
例句：His role has always been ambiguous.
他的角色一直不明確。

7. Conspicuous adj. 顯而易見的
選項同義詞：easilynoticed     
例句：The advertisements were all posted in a conspicuous place.
廣告都貼在了顯眼的地方。

8. Contradictory adj. 相互矛盾的
選項同義詞：conflicting   
例句：We are faced with two apparently contradictory statements.
我們面前這兩種說法顯然是矛盾的。

9. Cumulatively adv. 累計地
選項同義詞：altogether    
例句：At first, the drug does no harm, but cumulatively its effects are bad.
這藥開始對人沒有害處，但連續服用后果就壞了。

10.Constituentn. 構成部分
選項同義詞：component
例句：Caffeine is the active constituent of drinks such as tea and coffee.
咖啡因是茶和咖啡這類飲品的活性成分。