Kerectomy
[医] 角膜[部分]切除术
🗣️ 情景例句
Can I buy you a drink?
我能为你买杯酒吗？
Button holes are very hard to sew.
要缝钮扣洞非常难。
But here we come up against the most difficult of all obstacles to contact with people on other planets ----the astronomical distances which separate us.
然而，在和外星人联系中我们遇到的最大困难是分隔我们的天文距离。