Beta-lactam
[医]β-内酰胺，乙内酰胺
🧩 词语组成解析
n. 希腊字母表的第二个字母\\n[医] β(希腊文的第二个字母), 乙种
n. [化] 内酰胺, 乳胺
🗣️ 情景例句
but I really enjoy it.
但我确实乐在工作。
Why are you so short?
你为什么那么矮呀？
Almost any day a young porpoise may be seen trying to turn a 300-pound sea turtle over by sticking his snout under the edge of his shell and pushing up for dear life.
几乎每天都可以看到一只小海豚把鼻子顶入一只300磅重的海龟的硬壳下面，拼命地把它翻过来。