Crorn-heel
[医] 顶踵长度(胎长)
🧩 词语组成解析
heel
[hi:l]
n. 脚后跟，踵;（鞋、袜等的后跟）;（四足动物的）后脚;踵状物;
vt.& vi. （使）倾斜;
vt. 给（鞋等）修理后跟;
🗣️ 情景例句
What are the odds on her being expelled?
她会不会被开除？
I'm not joking.
我可不是说着玩的。
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。