Backlimb
背翼
🗣️ 情景例句
Presents--for me?
礼物你给我的？
I've got a slight pain in my teeth.
我的牙有点痛。
But instruments far more delicate than that were needed if any really serious advance was to be made.
但是，如果要取得真正重大的进展，需要有比这种装置精细得多的仪器。