grass-root英ɡ'rɑːsr'uːt美ɡ'rɑːsr'uːtCOCA²⁰⁹⁶³⁷BNC¹⁷³⁹⁹⁵⁺² 基本例句 adj.基层¹⁰⁰ American parents have led grass-root protests against attempts to extend the school year into August or July, or to increase the amount of homework their little darlings have to do. 美国父母们开展了草根抗议行动抵制把学期延长至七月或八月,或者增加他们的小宝贝们需要做的家庭作业。 ecocn