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These canals are frequently excavated through rock, and require tunnels, flumes, syphons, aqueducts and open concrete-lined channels.
这些水渠往往要凿通岩石,并需要地道、引水沟、弯管、渡漕和混凝土水道。
v. 用虹吸管吸;抽取;抽调;(syphon的第三人称单数)
These canals are frequently excavated through rock, and require tunnels, flumes, syphons, aqueducts and open concrete-lined channels.
这些水渠往往要凿通岩石,并需要地道、引水沟、弯管、渡漕和混凝土水道。
invidious adj. 可能遭人怨恨的;会惹人愤怒的;招人嫉妒的;厚此薄彼的;不公平的;歧视的
dials v. 拨号;拨打电话;用标度(盘)测量;(dial的第三人称单数)。n. 表盘;日晷;钟面;拨号盘;刻度盘;转盘;(dial的复数)
supplicated vi. 恳请;哀求;(supplicate的过去式)
remanded v. 送回;(remand的过去分词)。n. 还押
operational definition 运作定义;操作定义
endorsing vt. 赞同;支持;签署;(endorse的现在分词形式)