They set up a net to catch any lizards that lost their grip.

他们铺设了一张网，用来接住没抓住栖木的蜥蜴。

As the Byzantines gradually lost their grip on  power and ceased to administer large parts of Italy, a series of self-governing independent  kingdoms emerged in the medieval period.

随着拜占庭人逐渐失去对权力的控制并不再管理意大利的大部分地区，中世纪时期出现了一系列自治的独立王国。