粒径改良路基经历的融化期略长于天然场地，但远短于普通路基。
The thaw period of particle reformative roadbed is longer than that of natural field, but less than that of normal roadbed.
温暖干燥的冬天过后，春天的气温特别高，这样融化期很早就开始了。
After a warm, dry winter, temperatures were particularly high in the spring, getting the melt season off to a strong start.
这幅图片获得于2004年6月23日，当海冰在夏季融化期消融或退去之前。
The image was acquired on June 23, 2004, before sea ice had melted or retreated in the summer thaw.
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