触控能力将推动 macOS 引入全新的动态界面：系统会根据用户的操作方式在界面更大的触控模式与传统鼠标点按模式之间切换。系统还将支持与 iPhone、iPad 类似的快速滚动与双指缩放。
tee() splits a stream into two branches. It seems straightforward, but the implementation requires buffering: if one branch is read faster than the other, the data must be held somewhere until the slower branch catches up.
，更多细节参见51吃瓜
Morgan (left) has followed Yungblud to places like Amsterdam where she even snapped a selfie with him
He said it was likely hospitals would start using surgeons and theatres more to carry out operations that do not require bone cement.