act as leading role的用法和样例：
- Serve as leading role with wicker grain, match with green.
- Family plays d decisive role in the home education of childish emotions, and parents act as a leading role in advancing the home education of childish emotions.
- This annulus invests You Qiming to achieve cast present as leading role, IDG, couplet achieves plan source, soft Yin Saifu to follow cast.
- The forest will act as a defense against desert dust.