Ulitis
龈炎
🗣️ 情景例句
I'd rather walk than take a taxi.
我宁愿走路去，也不愿坐的士去。
But we cannot afford to depend on tradition alone.
但是我们不能靠吃老本过日。
some drifting and slow, others jerky and rapid.
这些活动有的飘忽而缓慢，有的急剧而快速。