Heavy bag
n. （拳击的）练习袋
🧩 词语组成解析
heavy
['hɛvi]
adj. 重的，沉重的;大量的，浓密的;激烈的;重型的;
n. 重物;庄重的角色;
adv. 密集地;大量地;笨重地;
bag
[bæɡ]
n. 袋，囊，枕套;钱包，手提皮包，财富;〈英俚〉大量，很多;
vt. 把。。装入袋中，猎获;捕获;得分;抢占;
vi. 松散地垂挂;鼓胀;
🗣️ 情景例句
How many words can you type per minute?
你一分钟能打多少字？
A person must strain one's ears to hear a wild animal in the forest.
在森林里，人类必须对野兽竖起耳朵才行。
As he hated army life, he decided to desert his regiment.
他讨厌军旅生活，决定逃离所在部队。