“life preserver”的概念、定义、翻译、参考文献-科学参考

单词	life preserver
释义	life preserver [`līf pri´zǝr·vǝr] ^ENGINEERING A buoyant device that is used to prevent drowning by supporting a person in the water.
随便看	micrometeorology micrometer micrometer caliper micrometer of mercury micromicro- micromicrowatt micromini microminiature circuitry microminiaturization micromodule Micromonospora Micromonosporaceae Micromonospora purpurea micromotion film micromotion study micron micronekton micronized clay micronized mica micronucleus micronutrient microoperation microoptics microorganism micropaleontology

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