span

n.一段时间；跨度

space station, space-age, space-bar, spacecraft, spaceman, spaceship, spaceshuttle, spacesuit, spacewalk, spacing, spacious, spaciously, spaciousness, spackle, spade, spadeful, spadework, spaghetti, Spain, spam, spangle, spaniel, Spanish, spank, spanking, spanner, spar, spare, spare part, spare tyre, spare-rib, spare...from, sparing, sparingly, spark, sparking-plug (also `spark-plug), sparkle, sparkler, sparkling, sparks,