The application of the middle line method of dam construction and the tailing transportation using water isolation pumps are an effective way.

采用大坝中线法施工，采用隔水泵输送尾矿是一种行之有效的方法。

The middle line has seven syllables.

中间的一行有七个音节。

Mine cross middle line point is widely used in mine construction and production.

矿井十字中线点在建井和生产过程中使用较多。

Ming men point DU4, GV4 is on the spine, opposite from the navel, at the middle line, in the second lumbar spinous depression.

命门穴位于人体的腰部，肚脐相对后面，背后正中线上，第二腰椎棘突下凹陷处。

The top curve should have been "convexed" in the other direction, while the middle line should have become a tad more straightened.

最顶端的曲线应该是向其他方向“凸出的”，中间的线条应该更加直一些。