Upper surface
[医] 上表面(叶)
🧩 词语组成解析
upper
['ʌpə]
adj. 地位较高的;上面的;内地的;地表层的;
n. 鞋帮，靴面;兴奋剂;令人兴奋的经历;
surface
['sɝfɪs]
n. 表面;外观，外表;地面。水面;
vi. 浮出水面;在表面工作;显露;
vt. 使浮出水面;使成平面;
adj. 表面的，外观的;外表上的，平地上的;肤浅的;
sur超过，在上面+face脸面→表面
🗣️ 情景例句
We would expect to hold them until at least the end of this year.
我们会保持这些价格不变，至少直到今年年底。
I still need three more credits in Psych; maybe I'll take Ed Psych this term.
心理学我还需要三个学分。或许我在本学期修教育心理学。
A policeman approached Jimmy and told him he ought to have gone along a side street as Jumbo was holding up the traffic.
一个警察走过来告诉吉米，他应该走一条小路，因为江泊阻碍了交通。