This is largely because Afghanistan refuses to recognise the frontier-known as the Durand line-between the countries, drawn by the British.

很大程度上是因为阿富汗人拒绝承认杜兰德线- - -位于两国之间，由英国划分的边界。

youdao

Much of the tension has arisen from a longstanding dispute between Pakistan and Afghanistan over the Durand line, the 117-year-old colonial boundary they still contest.

巴基斯坦和阿富汗在杜兰线问题上一直争论不休，双方之间的紧张气氛很大程度上来源于此。杜兰线是个有117年历史的殖民边界，目前仍处于互不相让的状态。

youdao

During period of British intervention, ethnic Pashtun territories were divided by the Durand Line; such a division led to strained relations between Afghanistan and British India and later, Pakistan.

在英国殖民的那段时间，普什图族(Pashtun)的领土被杜兰德线(Durand Line)分割，并且导致了阿富汗和英属印度以及后来出现的巴基斯坦的紧张关系。

youdao

Thousands of tribesmen on the Afghan side of what is known as the Durand Line were rounded up to protest against the plan.

ECONOMIST: Afghanistan and Pakistan

Afghanistan doesn't recognize the so-called Durand Line, the British-drawn boundary between the two countries that cuts through ethnic Pashtun lands, as an international frontier with Pakistan.

WSJ: Afghans Protest After Clash on Pakistani Border

The British-drawn boundary between the two countries is disputed by Afghanistan, which doesn't recognize the so-called Durand Line that cuts through the ethnic Pashtun heartland as an international frontier.

WSJ: Afghan, Pakistani Forces Clash