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DEFINITIVE EXAMPLES 权威例句She reached the 500-metre marker in record time, but she fell back in the second half of the race.她前500米跑用了最短时间,但在后半程中落后了。剑桥国际
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isotope dilution mass spectrometry (IDM)
isotope dilution spark source mass spectrometry
isotope discrimination
isotope dispenser
isotope effect
isotope enrichment
isotope equlibrium
isotope exchange reaction
isotope exchanger reaction
isotope flask
isotope fractionating
isotope fractionation
isotope gauge
isotope geochemistry
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isotope handling cable
isotope handling calculator
isotope hydrology
isotope ion
isotope isomer
isotope labeling
isotope labeling reagent
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更新时间:2026/5/17 10:44:28