游泳时要注意避开那些标记暗礁的浮标。

Swimmers should avoid the ___buoys that mark underwater rocks.

救生圈使游泳者在水面上漂浮。

The life ring ___buoyed the swimmer in the water.

朋友们的支持让她在困难时期保持了希望。

Her friends' support ___buoyed her hopes during tough times.