Refractive indices
[医] 屈光指数, 屈光率
🧩 词语组成解析
a. 折射的, 有折射力的\\n[医] 折射的, 屈光的
pl. 索引, 指针, 指数, 指标
🗣️ 情景例句
Do we have to pre-book tours, or can we get them on site?
我们必须预定行程， 还是到那个地方再说？
I meet the boy whose aunt is a housemaid.
我遇到那个男孩的姑妈是家庭主妇。
and slipping through we no longer take omens from their flight on this side and that; and even the most superstitious villagers no longer take off their hats to the magpie and wish it good-morning.
这些鸟对我们是有益的，虽然我们不再从它们的飞翔姿态来占卜吉凶，连最迷信的村民也不再对喜鹊脱帽行礼，祝它早安了。