他是一名经过专业培训并持有专业认证的急救员。

He is a ___trained first aid responder with professional certification.

所有的聚光灯都对准了舞台中央的歌手。

All spotlights were ___trained on the singer at the center of the stage.

园丁将玫瑰枝条修剪成拱形。

The gardener ___trained the rose branches to form an arch.