1. The triumviri ruled Rome during a period of political instability.
三人统治者在政治动荡期间统治着罗马。

2. Octavian, Antony, and Lepidus formed a triumviri to defeat their enemies.
奥克塔维安、安东尼和勒底浦斯组成了一个三人执政官来打败他们的敌人。