Tā / yīnwèi / tāntú / lìyì / ér / tóu / dí / ， / bèipàn / le / zìjǐ / de / guójiā / 。

他因为贪图利益而投敌，背叛了自己的国家。

He defected and betrayed his own country because he was greedy for profit.