Teething problems
n. （项目、新产品的）初期问题, 萌芽期的困难
🧩 词语组成解析
n. 出牙, 出牙现象\\n[医] 出牙, 生牙
n. 问题；难题（problem的复数）
🗣️ 情景例句
I put them in the pocket of my sports jacket.
我把它们放在我运动夹克的口袋里。
We should keep them informed of what is going on here.
我们应该让他们知道这里发生的事情。[分词作定语]
(A light year is the distance which light travels at 186,000 miles per second in one year,
一光年是光以每秒186，000英里的速度在一年内走的距离，