sand-bar

n sandbank at the mouth of a river or harbour （河口或港口的）沙洲.

samovar, sampan, sample, sampler, sampling, samurai, San Andreas fault, San Francisco, sanatorium, sanctification, sanctify, sanctimonious, sanctimoniously, sanctimoniousness, sanction, sanctity, sanctuary, sanctum, sand, sand trap, sand-blast, sand-castle, sand-dune, sand-fly, sand-pit, sand-shoes, sand-yacht, sandal, sandalled, sandalwood, sandbag, sandbank, sandboy, sandiness, sandpaper, sandpiper, sands, sandstone, sandstorm, sandwich,