At the least, irrigation can lessen the damage from huge temporary swings in rainfall (even if it can't do much about huge permanent swings in rainfall).
至少，灌溉可以缓解因降雨临时性的巨大变动造成的危害(即使它无法应对降雨量永久改变也罢)。
This will promote the farther spread of permanent pipeline sprinkler irrigation system.
为促进固定式管道喷灌系统的进一步推广提供了新的证据。
This will promote the farther spread of permanent pipeline sprinkler irrigation system.
为促进固定式管道喷灌系统的进一步推广提供了新的证据。
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