The rabbit tires and falls, landing inside the hollow trunk of a sycamore tree, where he is trapped.
兔子掉到了一棵无花果树的空树干里, 怎么挣扎也出不去.
《简明英汉词典》
生长模型是定量研究果树干周生长过程的有效手段.
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He took his ax and struck the trunk of the tree. Whack. Whack. Whack.
他举起斧子砍树干,咔,咔,咔。
《柯林斯高阶英汉双解学习词典》
