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- Where coal is cheap, steam power may be economical. 煤便宜的地方，蒸汽動力就經濟。
- Where coal is cheap,steam power may be economical. 煤便宜的地方，蒸汽動力就經濟實惠。
- We must be economical with our time. 我們必須節約時間。
- You must be economical of your money and time. （你必需節省你的金錢和時間。）
- We should be economical of our money and time. 我們應該節省金錢和時間。
- When we had done the costings on the project, it was clear it would not be economical to go ahead with it. 我們計算了成本，清楚表明這項工程不合算。
- Only by using availing machinery can it be economical of time and energy. 只有使用了得力的機器,才能省時省力。
- He was economical in all areas of his life. 他在生活的各個方面都精打細算。
- The chief gains would be economic. 最主要的好處還是在經濟方面。
- The cruise condition must also be economical and adequate for the aircraft mission. 巡航狀態也必須是經濟的以及能夠適應飛機的飛行任務。
- The right honourable gentleman is being economical with truth. 這位議員朋友只是對真理較為吝惜而已。
- It could, for example, be economic sanctions or blockades. 它可以, 舉例來說,是經濟制裁或阻塞。
- To be economical these processes will require efficient solvent recovery operations. 若要經濟，就要有有效的溶劑回收工序。
- Both planning and marketing are economic means. 計劃和市場都是經濟手段。
- Articles of everyday use are economically priced. 日用品價格低廉。
- I do not need nor can I afford to buy it all at once and the shipping for small amounts would not be economical. 我買不起也沒必要去買,對金額量少的裝運也不是節約的辦法。
- The teachers' demands were economically unfeasible. 教師們的要求在經濟上是不可行的。
- Far more fundamental are economic forces. 更加重要的是經濟力量。
- His major in college was economics. 他上大學時主修經濟學專業。
- My major was Economics and Trade. 我主修的是經濟與貿易.
