Longum磺胺甲氧吡嗪, 磺胺-3-甲氧吡嗪, 吡嗪磺, 长效磺胺B[磺胺类抗菌药]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-play record慢转密纹唱片long exchange rate[经] 远期汇兑率long-time system长效机制long spout oil can长嘴油壶long-ahead adder先行进位加法器longer-term debt长期债务long-ahead carry先行进位long handle shovel长柄铲long-range chart远程航图long-term policy长期政策