unprecedented

The bakery received an unprecedented flood of orders today. ▶

今天这家面包店收到了空前大量的订单。

Many coastal communities face unprecedented challenges as rising sea levels threaten homes, infrastructure, and local livelihoods.

随着海平面上升威胁住房、基础设施和当地生计，许多沿海社区面临前所未有的挑战。