试坑(test trench), 此释义来源于网络辞典。
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... test to destruction 破坏试验 test trench 试验坑 ，取土坑 test well 试井 ...
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Though the tubing laid on top of the trees during the test run, more permanent pipelines can be installed by laying a tube along roads or rivers, digging a trench, and burying it.
FORBES: Startup Aims To Install Pipelines With Helicopters...Seriously!
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