这棵古树的树干宽度超过两米。

The ___trunk of this ancient tree measures over two metres in width.

在树干靠近根部的地方发现了一个小洞。

A small hole was discovered in the ___trunk, close to where the roots begin.

橡树坚固的树干为其沉重的树枝提供了强有力的支撑。

The sturdy ___trunk of the oak tree provides strong support for its heavy branches.