under the wagon在: exist; be living推车: shallow; trammer下: below; down; under; undernea ...载在推车上的: pickaback存在推广规则: rule of existential generalization下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:在推车下，即可在微信中查询翻译
