The lift will not be operational for the next three days. 电梯在今后3天将停止运行。
The new computer system is fully operational. 新的计算机系统完全可以使用了。
We are determined to raise our operational efficiency. 我们决心提高经营效率。
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👨🏻🏫 Mr. Ng 麥美倫詞典 📚 – macmillan.mister5️⃣.net
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