Doubleness
n. 二倍, 双重
✅ 同义词
🗣️ 情景例句
How's your son getting on with his English?
你儿子的英语学得好吗？
To drop
掉下
The Cutty Sark rolled from side to side and it became impossible to steer her.
船身左右摇晃，无法操纵。