It shall reckon in tilting movement resulting from perchedwater in the stability analysis of tilting failure of bedded rock slope, thus it can only explain many irregular phenomena of topping mass.
层状岩石边坡倾倒破坏稳定分析中，应计入上层滞水产生的倾倒力矩，这样才能解释倾倒体的许多不规则现象。
2
But she was amazed to see an African Grey Congo parrot perched on a water butt as she hung out washing in the garden.
然而，当她在后花园进行洗涮时，竟然看到一只灰色的非洲刚果鹦鹉栖息在水桶上。
3
Off Japan's northeastern coast, an oil tanker lay eerily stranded in shallow water. Inland, in Sendai, a black mini-van perched perilously on a metal post.