... 双膝跪下 fall on one's knees 双航向信标 two-course range 双船围网渔船 pair-system purse seiner ...
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Two-course Radio Range 双航路无线电导航 ; 双航路导航台
two course radio range beacon 双航向无线电信标
It took four searches over the course of nearly two years to locate the bulk of the wreckage, still containing many bodies, in a mountain range deep under the ocean.
花费近两年时间，四次搜寻工作，在深海一处山脉地区发现了飞机残骸，以及仍在里面的许多遗体。
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