1·They have heavy and straight tree trunks.
牠们有又重又直的树干。
2·They jab tree trunks to toughen their hands and practice squatting with other students sitting on their shoulders to build the leg strength.
他们猛击树干来锻炼双手，练习蹲坐，让其他同学坐在他们的肩膀上锻炼腿部力量。
3·Tie the laces together, stretch them between two tree trunks, tie them around and hang the plastic over, like a tent.
把鞋带连在一起，绕过两棵树系起来，把塑料布放在上面，像一个帐篷。
4·Treecreeper is a small forest bird with large claws for climbing tree trunks in search of insects.
旋木雀是一种小型的森林鸟类，有巨大的爪子，用来爬上树干寻找昆虫。
5·Please plane the knots off those tree trunks.
请刨掉树干上突起的小结。
6·Dawn comes. The sparse tree trunks take on color now.
黎明到来了。稀稀落落的树干开始渐渐显露出来。
7·They built a primitive shelter out of tree trunks.
他们用一些树干建造了一个简陋的棚子。
8·They covered the tree trunks and branches with ice.
树干和树枝被冰覆盖着。
9·The moment I saw the arching tree trunks, I took this picture.
此时我看见了成拱形的树干，我拍了这张相片。
10·There are seven tree trunks with COINS pushed into them in Wales.
在威尔士，也有7棵镶着硬币的树。