可维持产量

sustainable yield的用法和样例：

例句

Favourable weather in many parts of the world also helped to sustain yields in the face of high fuel and fertilizer prices.世界许多地区良好的天气条件也有助于在燃料和化肥价格走高的情况下维持产量。

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商务交际高手03

Apology and explanation Useful sentences I apologize. I must apologize. Pardon me. I am truly sorry. I beg your pardon? A thousand pardons for it. I just dont know what to say. I am afraid of brought you too much trouble. It was most careless of me.

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