preliminary investigation的用法和樣例：
例句
- Two geologists will make a preliminary investigation.
有兩位地質學家將做一次初步調查。 - We've reported some of the preliminary findings in the study.
我們已經把一些初步調查結果寫進調研報告了。 - Preliminary study on moisture metabolism of Silphium perfoliatum L.
串葉松香草水分代謝初步研究。 - A Preliminary Study on Callus Inducement from the Anther of Jartopha curcas L.
麻瘋樹花藥愈傷組織誘導的初步研究。
