黄色的太阳花在阳光下格外鲜艳。

The ___yellow sunflowers look especially bright under the sunlight.

别这么胆小，跟老师说说你的想法。

Don't be so ___cowardly, tell the teacher your thoughts.

黄色交通灯表示你应该谨慎驾驶。

The ___yellow traffic light means you should drive with caution.