A knot of black and white cars obstructed the intersection.

挤作一团的黑白轿车阻塞了那个十字路口。

The pillar obstructed our view of the stage.

柱子挡着，我们看不见舞台。

First check that the accident victim doesn't have an obstructed airway.

首先要确保事故受伤者的气道通畅。

Obstructed nasal passageway.

鼻腔阻塞。

Tall trees obstructed his moving.

大树阻挡了他的前进。