Hardcovers
(hardcover 的复数) a. 硬书皮的\\nn. 硬封面的书, 精装书
🗣️ 情景例句
Put the tablecloth on the picnic table,
将桌巾布放在野餐桌上，
We had a fabulous time at the garden party.
我们在游园会上玩得很开心。
Once the oxygen content of the air had risen to 25% it was ready to burn.
一旦氧气在空气中的含量达到25%，它就要燃烧。