in-use performance的用法和樣例：
例句
- Are you a Jekyll or a Hyde when it comes to efficient use of resources?
面對資源使用效率時(shí)，你是杰柯還是海德呢？ - But efficient use of water, cautions Pasquale Steduto of the United Nations' Food and Agriculture Organisation, is just one step to better agricultural yields.
農業(yè)學(xué)家們開(kāi)始設計工具，幫助監測水的使用效率。
