"teething" in Chinese (Simplified)
长牙期出牙
Definition
婴儿的第一颗牙开始穿过牙龈的过程，通常会引起不适。“Teething”有时也指新项目或系统初期遇到的问题。
Usage Notes (Chinese (Simplified))
主要用于婴儿，但也比喻用于新事物初期出现的问题（如“teething problems”）。常用于描述孩子正在出牙时。不用于成人换牙。
Examples
The baby is teething and cries a lot at night.
宝宝正在**长牙期**，晚上经常哭。
Many babies have a fever when they are teething.
很多婴儿在**出牙**时会发烧。
During teething, babies like to chew on things.
在**长牙期**时，婴儿喜欢咬东西。
She's having trouble sleeping because she's teething right now.
她最近睡眠不好，因为现在正处于**长牙期**。
The new software has a few teething problems, but it's getting better.
新软件有一些**初期**（**teething**）问题，但正在变好。
Don’t worry, all babies go through teething sooner or later.
别担心，所有宝宝迟早都会**长牙**的。