This is also true with those who temporarily drop behind .

这对那些暂时落后的人来说也是适用的。

The plane, with its greater speed, gained on the swans. They began to drop behind.

飞机以极快的速度，超过了这两只天鹅。他们开始落后了。

Ken leaped and raced across a few rooftops, managing to drop behind him.

肯恩跳跃而且比赛横过一些屋顶，设法在他后面降低。

She saw Neri drop behind Michael and off to the side, saw his quick penetrating glance as his eyes swept over everybody nearby.

她看到奈里走在迈克尔后面，又窜到他身旁，还看到他那锐利的目光迅速扫视附近的每个人。

There have been a number of studies on the uses of this technique, but theoretic researches of that still drop behind its applications in construction and need being further perfected.

目前国内外关于这方面的研究开展的较多，并取得了一些成果，但理论研究深度远滞后于实际工程应用。