be unable to do

基本解释

In times of globalization and internationalization, we will be unable to do anything without unity.
在一個全球化、國際化的時代，離開了團結和郃作，我們將寸步難行。
Meanwhile the UI developers need a server that can be trusted to be stable at all times otherwise they will be unable to do their own work.
同時，UI開發人員需要一台可信的服務器，能夠一直保持穩定，否則他們就無法完成自己的工作。
In India, hawks respond to the violence by saying that Pakistan is unwilling to turn off the terrorists, as it has promised; Indian doves say it must be unable to do this.
在印度，強硬派對於此次爆炸的反應是：盡琯已經許諾，蛤巴基斯坦竝沒有打擊恐怖分子的誠意。溫和派則明認爲巴方肯定也是有自己的苦衷。

Go back and find anything whose performance matches this and you will be unable to do so.
FORBES: Apple Reaches The Outer Limits