This is the 979th most frequent Japanese word.
持続
"持続" means "continuation" or "sustainability."
In this sentence, '持続' refers to the concept of persistence or continued effort, emphasizing the action of sustaining one's efforts until accomplishing results.
持続する努力が結果を生む。
Sustained effort produces results.
Here, '持続' is used to describe the duration for which the effectiveness of something, such as medication, is maintained.
この薬の効果は持続時間が短い。
This medication has a short duration of effectiveness.
In this context, '持続' is part of the term '持続可能', meaning sustainable, highlighting the concept of maintaining resources in the long term.