before opemtlon的用法和樣例：
例句
- Conclusion Ultrasuond is a useful tool to find the acute appendicitis diverticulitis before the operation.
結論腹部超聲是術(shù)前診斷急性闌尾憩室炎的一種有價(jià)值的檢查方法。 - We analyzed the risk factors associated with failing to optimally administer preoperatie antibiotics before primary hip and knee arthroplasty.
我們在這里就分析了初次髖膝關(guān)節成形術(shù)前的最佳抗生素應用方式失敗的危險因素。
