main drainage ditch 总排水沟
main ditch 主排水沟
main pier base ditch 主墩基坑
ditch main
沟主要
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Along with mistaken egalitarian assumptions, governments should also ditch another misconception: the utilitarian notion that universities' main merit is their economic usefulness.
ECONOMIST: Universities
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