Backbones
n. 骨干( backbone的复数形式 ); 脊骨; 骨气; 脊骨状物
🗣️ 情景例句
My instructor thought that the beginner's class was too easy for me.
老师认为初级课程对我来说太容易了。
When he opened the door the cat ran out and brushed by his legs.
当他一开门，那只猫跳了出来，偎依在他的脚边。
My name is Liu Ying. I'm in Row 1. I'm Number 2.
我叫刘颖。我在第一排。我是2号。