在某种程度上，这是由于涡轮螺旋桨具有强健的力学特性，而部分原因是由于“空中拖拉机”的油箱有橡胶膜紧密围绕弹孔使得泄漏减缓。

In part, this is because of the robust mechanics of turboprops and in part because Air Tractor's fuel tanks have rubber membranes which close around bullet holes to slow leaks.

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基于泄漏的严重程度，止漏成为了一道技术上的难题。

The great depth of the leaks from the rig makes staunching them a huge technical challenge.

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虽然自20世纪90年代以来科学家对北极地下的甲烷及其泄漏的可能有所了解，但这项研究是首次记录到这个程度的文献。

Although scientists have known about the methane under the Arctic - and its potential for leakage -since the 1990s, the study is the first to document it to this degree.

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