The disillate needs to be kept in an air-tight container.
蒸馏后的精华需要保存在密封的容器内。
It is as essential as food and water. And like the air which you inhale and exhale, it must be kept in free and unblocked circulation.
它与食物和水一样必要，像空气一样被你吸入又释放，它必须保持自由和不被阻塞的流通。
The White House office — which had approved the flying photo opportunity but ordered that the public be kept in the dark about the flight plan — said the Air Force was handling the issue.
是白宫办公室批准了这次飞行拍摄任务，并要求将这一飞行计划向公众保密，他们的回答是空军部门正在处理这一问题。
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