poor mixture的用法和樣例：
例句
- The carburetor delivers a rich mixture to the precombustion chamber and a lean mixture to the main cylinder.
化油器將濃混合氣輸至副燃燒室，將稀混合氣輸送至主氣缸。 - It is a poor substitute for good note taking.
它只是掘劣地替代了好的課堂筆記。 - Regulating actions are taken against contractors with poor site safety records.
對于地盤(pán)安全記錄差劣的承建商，當局已采取規管行動(dòng)。
