This is the 6128th most frequent Chinese word.
層及
"層及" means "level and reach" or "extent across levels."
In this case, "層及" is used to denote levels or tiers within an organizational structure.
我們必須權衡公司的各個層及之間的利益。
We must balance the interests among various tiers and levels within the company.
This sentence uses "層及" to indicate layers or levels in the architectural context.
這棟建築物包含了數不清的層及。
This building includes countless layers and levels.
Here, "層及" refers to different strata or levels in the societal context.