T.f.
[医] 结核菌素滤液
🗣️ 情景例句
The price has been consistently maintained.
价格始终保持稳定。
By what time should I check in?
我该什么时间办理登机手续呢？
it would be up and down, to and for and from side to side.
呈现出上上下下、来来回回、左左右右3种性质的运动。