缺点：容易饱和（输入过大或过小时梯度接近0，导致梯度消失）
FT Edit: Access on iOS and web
，更多细节参见Line官方版本下载
Hospitals have about two weeks supply of bone cement in stock.
旅行中，一些外国人成为中国新故事的讲述者。格里夫妇在重庆旅行期间，拍摄制作了多条短视频，既有李子坝奇特的“单轨穿楼”，也有错落有致的立交桥，展现了山城的现代风貌。
Within the command centre, officials work to obtain live visual feeds from CCTV cameras positioned around the parliamentary complex. According to one anonymous officer, they have a TV but no dedicated internet line, and that when they attempt to establish a connection, it is "not stable".