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探底 tàndǐ
securit. bottom out; dip into red
探底
: 64 phrases in 17 subjects
Aviation1
Coal1
Drilling3
Earth sciences1
Economy2
Electronics3
Engineering geology5
Finances2
General1
Geophysics2
Nautical4
Navigation1
Nuclear and fusion power1
Oil / petroleum1
Programming1
Space2
Technology33