keep a tight grip on的用法和樣例：
例句
用作及物動(dòng)詞 (vt.)
- The state-controlled press is still vilifying the Dalai Lama and the authorities have maintained a tight grip on Tibetan regions.
由國家控制的新聞系統，仍然在指責達賴(lài)喇嘛，并且當地權力機構依然對藏區進(jìn)行著(zhù)嚴密的控制。 - Security was tight in the capital, and three US activists were arrested after holding a pro-Tibet protest.
首都北京的安全處于嚴密的控制下，三名美國激進(jìn)分子于舉行支持西藏流亡政府的抗議而被拘捕。
