英语词组pyrethrin II是什么意思，短语翻译、用法及例句-英语词组固定搭配大全

词组	pyrethrin II
释义	1.pyrethrin I (C₂₁H₂₈O₃)除虫菊酯I 2.pyrethrin II (C₂₂H₂₈O₅)除虫菊酯II See pyrethrin
随便看	a seemingly incorrigible optimism a seething cauldron of sth a seething mass of humanity a segue from sth to sth a segue into sth a segue into sth a seismic shift in sth a seismographic record a seizable offence a select few a select few a select group a select group a selection of delicious canapés a selection of penny chews a self-addressed, franked envelope a self-made millionaire a semblance of sth a sense of achievement a sense of belonging a sense of betrayal a sense of decorum a sense of direction a sense of mission a sense of obligation

英语词组固定搭配大全包含52743条英汉双解词组，基本涵盖了全部常用英文词组、短语的翻译及用法，是英语学习的有利工具。