Stacking density
[化] 堆积密度
🧩 词语组成解析
[计] 叠卡
🗣️ 情景例句
He felt that his life was no longer worth living.
他觉得他的生命已经没有再活下去的价值了。
A beggar's purse is bottomless.
乞丐的钱袋是无底洞。
These days we use a thermos , said Li Lei.
“如今用的是热水瓶了，”李磊说。