短期間 (tankikan) Japanese meaning: short term | KotomoraIt's difficult to master Japanese in a short period.
This contract is for a short term.
Usage patterns
短期間で〈動詞〉to do something in a short period of time
He became able to speak Japanese in a short period of time.
短期間の〈事〉a short-term ~ (contract, stay, etc.)
Many people at this company work on short-term contracts.