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chain; series; connection
linkage
悲しみの連鎖を断ち切るのは難しい。
Breaking free from a chain of sadness is hard.
不況による倒産の連鎖が業界に広がった。
A chain of bankruptcies caused by the recession spread across the industry.
感染拡大により病院の態勢に連鎖的な影響が出た。
The spread of infection had a cascading effect on hospital capacity.