年百年中 (ねんびゃくねんじゅう) Japanese meaning | KotomoraMeanings
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adverb
all year round; always; constantly
yojijukugo (four-character idiom)
Emphatic yojijukugo meaning 'throughout the entire year' or 'always, without a break'. Often used in negative contexts or to stress continuous effort.
She is always complaining.