The division of their father's property is their bone of contention.

父亲的财产分配问题是他们争吵的原因。

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Magnesium alloys also was made a primary exploration in oral maxillofacial surgery, oral planting, oral repair, oral orthodontic division and bone tissue engineering, and so on.

对镁合金在口腔颌面外科、口腔种植、口腔修复、口腔正畸科及骨组织工程等方面的研究和应用也进行了初步的探索。

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Wales scored all three of its tries against Ireland after line breaks by its jumbo-sized back division, including two bone-crushing runs by North.

WSJ: Wales Unleashes Its Behemoths

In its medical division, the company makes systems to gauge bone density and perform a host of patient monitoring functions.

FORBES

One bone of contention was competition between Citi's Smith Barney brokerage operation and Wachovia's brokerage division, which was not included.

FORBES: Magazine Article