Definition: the thick stem of a tree that the branches grow from Level: B2
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.
