【正文】
udies of the gravity field of the earth indicate that its crust and mantle yield when unusual weight is placed on them.◆,在不尋常的負(fù)荷之下地殼和地幔會(huì)發(fā)生位移??忌梢月?tīng)聽(tīng)這節(jié)課哦!◆36. one of the wildest and most inaccessible parts of the united states is the everglades where wildlife is abundant and largely protected.36. everglades是美國(guó)境內(nèi)最為荒涼和人跡罕至的地區(qū)之一,此處有大量的野生動(dòng)植物而且大多受(法律)保護(hù)。四級(jí)句型結(jié)構(gòu)篇一情況是在不