Boats come in all shapes and sizes. Skiffs are very small boats for one person. Yachts are larger boats with sails. Cruise ships are much bigger and take passengers across the sea or ocean. The biggest cargo ships can carry more than 10,000 containers and weigh thousands of tons. 船的种类和大小多种多样。Skiffs 是单人小船;Yachts 是稍大一点的帆船或游艇;豪华游轮,也就是 cruise ship 要大得多,可载数千人远航;而最大的货轮可容纳一万多个集装箱,载重量巨大。