adj.空的；空洞的；凹陷的；虛偽的；(聲音)沉悶的
n.山谷；洞；窟窿
vt.挖空
vi.形成空洞
adv.完全地；徹底
This tree looks high and strong but actually its trunk is hollow. 這棵樹看起來(lái)又高又壯，實(shí)際上樹干是空的。
His protests on human rights sound hollow. 他就人權(quán)問題提出的抗議聽來(lái)很空洞。
He was thin and his cheeks were hollow. 他很瘦,連面頰都凹陷了下去。
An open enemy is better than a hollow friend. 寧有公開的敵人，不要虛偽的朋友。
She could hear nothing but the hollow echo of his steps. 除了他的腳步的低沉回音，她什么聲音都聽不到。
用作名詞 (n.)The track dipped, weaving into a wooded hollow. 小路消失了，迂回前行到了一片多樹的山谷里。
Squirrels often use a hollow in a tree to store nuts. 松鼠常用樹洞儲(chǔ)藏堅(jiān)果。
I crawled under the house and crept into a dark hollow of a brick chimney. 我爬到屋子底下，鉆進(jìn)了磚煙囪的黑窟窿里。
用作及物動(dòng)詞 (vt.)The Indians used to hollow out a log to make a canoe. 印第安人過去常挖空?qǐng)A木制成獨(dú)木舟。
用作副詞 (adv.)I played Max at chess yesterday and beat him hollow. 昨天我跟麥克斯下棋，殺得他一敗涂地。
