1、The tree trunk is always the same, but the leaves fall.
樹干總是一成不變，樹葉卻時落時生。

2、on the tree trunk there was one cicada, as lonely as an empty room;
樹榦上留著一只蟬蛻，寂寞如一間空屋；

3、The tree trunk was hollow inside.
這樹干里面是空的。

4、A notched tree trunk served as a ladder to an opening near the top.
一根有缺口的樹枝當(dāng)作梯子通向靠近頂端的開口。

5、Soldiers take shelter behind a tree trunk as they await the arrival of a medevac helicopter.
伊拉克某地的一次戰(zhàn)斗后，幾位美國士兵隱蔽在一棵樹干后，等待救傷直升機(jī)的到來。

6、One day he saw a big tree trunk on the road.
一天他在路上看見一個大樹干。

7、Bob bumped his head on a tree trunk and conked out.
鮑勃一頭撞在樹干上，昏倒了。

8、Grab a tree trunk or monkey bar at the local park to build upper body strength.
在附近的公園找一個樹干或單杠來鍛煉你上半身的力量。

9、Bob bumped his head on a tree trunk and conked out
鮑勃一頭撞在樹干上，昏倒了。