Question of the Day #1419

What is Scarborough Shoal—the bone of contention between China and Philippines

From the headline of this article at The Print.

  上記の文で、bone of contentionの意味は？
In the sentence above, what does "bone of contention" mean?

  答えは、コメントに書いてください。
Write your answer in the Comments.

明日、ここに答えを書きます。
I will add the answer and other remarks here tomorrow.

 

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