about替換詞有approximately、approaching、close to
basic替換詞有essential、indispensable、elementary、rudimentary
begin替換詞有commence、initiate
big替換詞有massive、extensive、immense
get替換詞有obtain、acquire
hard替換詞有arduous、rigorous
job替換詞有undertaking、occupation、vocation
know替換詞有comprehend、perceive
try替換詞有attempt、endeavor、venture
think替換詞有conceive、ponder、contemplate