hold on the chain

基本解释

However, the United States' hold on the first island chain is beginning to be pried loose anyway.
然而，不论如何，美国对第一岛链的控制正在开始被迫放松。
The PCC is a collection of loose alliances with a weak chain of command that needs “symbolic acts” to enforce contracts and hold on to allies.
这是因为首都第一司令部是一个松散并非强有力的联盟，需要一些“象征行动”来维持和加强他们的联盟。
Infosys, he explained, could hold a virtual meeting of the key players from its entire global supply chain for any project at any time on that supersize screen.
他解释说，整个全球供应链任何环节的核心人物都能随时开始会议，就在这个惊奇的屏幕上。