你知道粮食的自然特性，它是易自热物质。我们必须保证它在舱内有充分的空气环流。
You know grain's nature. It's liable to spontaneous heated. We must ensure it adequate air circulation in the hold.
你知道粮食的自然特性，它是易自热物质。我们必须保证它在舱内有充分的空气环流。
You know grain's nature. It's liable to spontaneous heated. We must ensure it adequate air circulation in the hold.
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