Definition
To be engaged in the process of working.
工作中
The farmers are currently at work in the fields.
農民們目前正在田裡工作。
The designers are at work designing the new product.
設計師們正在設計新產品。
The engineers are at work trying to solve the complex problem.
工程師們正在努力解決這個複雜的問題。
To be in the process of having an effect, typically a noticeable or negative one.
起作用（常指起负面作用）
The effects of the economic downturn are at work, negatively impacting small businesses.
經濟衰退的影響正在發酵，對小型企業產生了負面影響。
The power of rumors is at work, undermining trust between team members.
謠言的威力正在發揮作用，破壞了團隊成員之間的信任。
The effects of climate change are at work in various regions.
氣候變化的影響正在各個地區顯現。