It also takes longer to educate and train new contributors to now-mature fields.
而且如今需要用更多的时间来教育和培训一个在日趋成熟的领域的科学家。
The IEA estimates that the output from mature fields outside OPEC would naturally drop by about 11% a year.
国际能源署估计非欧佩克成员国内的成熟油田产量每年将自然下降11%。
I have been a slice cloud of autumn, the air-to-air contained no rain, but in mature fields, I see my enrich!
我是秋天的一片云,空空的不载雨水,但在成熟的稻田中,我看到了我的充实!
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