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1·Methods The elastic echelon formation work form was performed.

方法采用梯队式弹性工作方法。

2·The calves of dolphins swim alongside their mothers in an arrangement known as echelon formation.

刚出生的海豚以一种梯队的阵型游在他们母亲的身边。

3·The ideal pattern of the echelon formation is subjected to a certain rules and should have its own necessary measures to guarantee its development.

理想的教师学科梯队模式既要遵循一定的原则，又要具备必要的保障措施。

4·Since 1914, and a seminal paper by a German researcher called Carl Wieselsberger, scientists have known that birds flying in formation—a V-shape, echelon or otherwise—expend less energy.

1914年，一位名叫卡尔▪维塞尔斯伯格的德国研究员发表了一篇具有重大意义的论文，科学家们从中得知，鸟类在飞行的时候排成V字、梯形或倒过来时，会节省体力。