For open spread foundation, the pit is excavated by excavators for earth work with manpower to trim the side slope and build the ditch on top of base pit.

明挖扩大基础基坑开挖时，土方采用挖掘机开挖，并由人工配合进行边坡修理、基坑顶面排水沟的修建等辅助工作。

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The measuring principle of ultrasonic transducer in open ditch flowmeter is described briefly.

简单叙述了超声传感器用于明渠流量计的测量原理。

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Kim easily dealt with hiking along an open sewage ditch, spring with a car tire strapped to her back, floating for half an hour in frigid ocean waters and rolling commando? Style in mud.

沿着露在地面的下水道沟徒步行走，背上绑着汽车轮胎全速奔跑，在冰冷刺骨的海水中漂流半个小时，在泥浆中像突击队队员那样摸爬滚打，这些金都都能应付自如。

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Pena Nieto left the door open for the PRI to ditch anti-union measures in Calderon's bill, mindful they were divisive.

MSN: Analysis: Mexican labor reform signals battles ahead for Pena Nieto - World news - Americas | NBC News

But the most fearsome of these fences isn't "The Chair, " a 5-foot-3 high hedge fronted by an open ditch, the sharp bend of the "Canal Turn, " or even the dreaded "Becher's Brook, " with its steep 6-foot-5 drop.

WSJ: Why They Fear Aintree's First