2 sentences

1. 党政机关应当带头厉行节约。

   dǎng​zhèng jī​guān yīng​dāng dài​tóu lì​xíng​jié​yuē.

   Party and government organs should take the lead in practicing economy.

   Source: Dong Chinese Dictionary

2. 他带头参加了这次志愿者活动。

   tā dài​tóu cān​jiā le zhè cì zhì​yuàn​zhě huó​dòng.

   He took the lead in participating in this volunteer activity.

   Source: Dong Chinese Dictionary