Longva隆格瓦longadj.长的；冗长的；久的；长音的adv.长期地；久地；用于名词后强调某事发生在某整段时间v.渴望n.长时间；长音节；囤积商品者long jump results跳远成绩long-term study长期研究long-term trend长期趋势long in the teeth年迈的, 年老的long lad phosphor长余辉荧光粉long chain olefin长链烯烃long delay-time长延时long handle brush长柄刷long-bored pile钻孔灌注长桩long-dated bill远期票据