drop-off

• 名词，表示明显的下降、减少或恶化，常用于描述性能、质量或数量的下滑；也指陡峭的下坡或水平的降低。

A noun referring to a noticeable decline or deterioration in performance, quality, or quantity; also used to describe a steep downward slope or a decrease in level.

1. Noticeable declineB2formal

   A significant decrease or deterioration in performance, quality, or quantity.

   明显下降

   • There was a sharp drop-off in sales after the holiday season.
   • The team experienced a drop-off in performance during the second half.
   • Analysts noted a drop-off in customer satisfaction ratings.

   同义词declinedecreasedeteriorationdiminutiondipdowntickdownturnfalloffreductionslump

   反义词improvementincreaserisesurge

2. Steep rock faceC1formal

   A steep, high vertical or nearly vertical face of rock or cliff.

   悬崖

   • The hikers stood at the edge of a dangerous drop-off.
   • The trail ended abruptly at a rocky drop-off.
   • The canyon's drop-off was several hundred feet high.

   同义词bluffcliffcragescarpmentprecipicescarp

3. Downward changeB2formal

   A change in a downward direction, such as a decrease in value, amount, or level.

   下降

   • The stock market saw a drop-off in trading volume.
   • There was a sudden drop-off in temperature overnight.
   • The river's flow experienced a drop-off during the dry season.

   同义词declinedecreasediminutiondownturnfalllesseningreductionslump

   反义词boostincreaserisesurge