lie at the heart of的用法和樣例：
例句
- The heart of the problem is a shortage of funds.
問題的關鍵是缺乏經費。 - The key thing is to catch the bar worker's eyes.
關鍵是你要讓酒保看見你。 - The core of our appeal is freedom of speech.
我們的要求的核心是言論自由。 - At the heart of any integration is the sharing of data among various applications in the enterprise.
信息整合的核心是在企業所使用的各種應用程序間共享數據。
