In a manner that resembles a sieve or has a sieve-like quality with many small perforations.
Adverbial form of 'cribrate,' using the '-ly' suffix to convert the adjective into an adverb describing how something displays a sieve-like quality.
Adverbs ending in '-ately' often describe ways things appear or function—cribrately describes not just the thing itself, but how it acts or looks with those sieve-like characteristics.
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