These words are quite useful in securing band 9 in IELTS writing task 2

IELTS Bands 9 Writing Task 2 words 雅思写作任务2的高级单词

Plethora ( Many, excess of something) 名词 , 意思就是许多

There is plethora of time available for acquiring English skills.

Arduous ( Hard, Difficult) 形容词，意思就是难的

Learning is not an arduous task at all.

Enormous （huge, massive) 形容词, 意思就是巨大

China possesses enormous reserves of natural resources.

Contemporary ( modern, new, current) 现代的, 当代的

We require a contemporary approach to solve the world's problems.