Quarterstretch
n. (跑道的)终点直道
🗣️ 情景例句
You'd better watch your step or you'll get into trouble again.
你最好留点儿神， 免得再惹麻烦。
Inside the packet is some money.
小红包里装着些钱。
and if a single curved glass would distort nature, how much more would a pair of them?
何况一片曲面镜就可歪曲自然，那么伽利略的两片曲面镜对自然的歪曲又该多大呢？