sustained

adj. 持久的，经久不衰的

survivor, sus (also suss), susceptibility, susceptible, suspect, suspect sb. of, suspend, suspended, suspended animation, suspender, suspender belt, suspenders, suspense, suspension, suspension bridge, suspicion, suspicious, suspiciously, suss, sustain, sustenance, suture, suzerain, suzerainty, svelte, SW, swab, swaddle, swaddling-clothes, swag, swagger, swagger-stick (also `swagger-cane), swaggering, swaggeringly, swagman, swain, swallow, swallow up, swallow-dive (Brit) (US swan-dive), swam,