| 单词 | trivalent |
| 释义 | trivalent (once / 193760 pages) adj WORD FAMILY trivalent USAGE EXAMPLESThe participants filled out questionnaires to assess health behaviors and socioeconomic status, gave a blood sample, and were given the standard trivalent flu vaccine. New York Times(Apr 27, 2016) The new vaccine is bivalent instead of trivalent — that is, it contains vaccine against two polio strains, Type 1 and Type 3. New York Times(Apr 11, 2016) The global polio eradication initiative, led by the WHO, has planned a worldwide switch from trivalent oral polio vaccines to bivalent ones next month. The Guardian(Mar 16, 2016) adj having a valence of three |
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