ascending and descending, floating and sinkinglifting and lowering and floating and sinking升降: promotion and demotion浮沉: now sink,now emerge; be unst ...升降浮沉作用: the action of lifting浮沉: now sink, now emerge; be unstable or uncertain; drift along; oscillate 与世浮沉 follow the trend; swim with the tide沉降浮力: negative buoyancy下载手机词典可随时随地查词查翻译