Varifocals
变焦眼镜, 渐进眼镜 （镜片由上至下用于看远、近距离的东西）
🗣️ 情景例句
Yes.
是的。
Would he have seen you if you hadn't waved to him?
如果你没向他招手他会看见你吗？
but they do underline the general principle that the relationship between elephant and mahout is the key to successful training.
但强调了一项基本原则，象和驯象员之间的关系是驯象成功与否的关键。