年层理 [地质] varvity
多年层孔菌 Forces annosus ; fomes annosus
年代地层学 [地质] chronostratigraphy ; timestratigraphy
年代地层单位 chronostratigraphic unit ; chronolithologic unit
年关注臭氧层破坏 Firewood ; Lands Loss and Soil Degradation ; Lands Loss and
各种年龄层 all age groups ; different age groups
年龄层 Age group ; age cohort
年冻结层 annually frozen layer
年韵律层 annual rhythm
这可能会使低层冰变形，破坏其年层，从而造成记录之间的差异。
This may have deformed the lower ice, disrupting its annual layers and thereby causing the discrepancy between the records.
当围绕下一个五年经济计划的激烈争论在领导层中继续时，改革的呼声到来了。
The calls for reform come as intense debate continues among the leadership over the next five-year economic plan.
它建于1700年左右，有9层楼深，最后两层在水下。
Constructed in around 1700, it's nine storeys deep, with the last two levels underwater.
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