■ wound

要注意 wound 可以本身是个动词原形，也可以是 wind 的过去式和过去分词。

• sewage, sewer 与 sewerage
• sewer
• sewerage
• shame
• shape
• share
• -ship
• shipment
• shipping
• short
• short of
• should
• shut
• side of the tracks
• siege
• signature
• signature
• signature 与 autograph
• sin
• sin
• since
• since
• since
• since
• since