什么是比熊串串？
比熊和沙皮犬串种出来的，有点沙皮犬的特征。个头比沙皮犬小，没有沙皮那么皮，感觉比熊的基因多些，具体资料尚不上。
特征类似比熊，但没有比熊的卷，比较像沙皮。胸部胸腹相较比熊要稍平坦些，但比熊的平脐也没法和此犬相比。尾巴比熊长，有点沙皮的感觉，不卷。卷毛也是比熊的特点，此犬也有，但不如比熊。 身体娇小，活泼温顺，性情善良，无体臭，不容易流口水，是个可爱的陪伴犬，但比熊和沙皮都皮，需要多带出去遛，不然在家容易喊，平时很安静，但一出门，撒腿你追我赶的，热闹的很。聪明，不太喜欢叫，相对比熊而言比较皮实，不容易得病。
比熊串串，顾名思义肯定有比熊的血统，但另外还会有其他犬种血缘，难以确定。
按道理，比熊是一种比较成熟的犬，而其他犬种的遗传基因比较活跃，所以生出来的比熊串串应该会比较皮实。但也难以保证没有遗传病。所以购买的时候注意挑选，好的比熊串串当然好，如果买到不干净的，容易得病的，就得不偿失了。
按照赛级要求：为下面的文章标题写一篇中等长度的英文文章，内容是一篇英文短文，要求通顺，语法正确，无词汇错误
内容：My family and I had a busy vacation. In our famalily there are 3 people ： my father， my mother and I . We like
traveling by train . It was a hot and windy day .We wanted to go to the beach. We all felt very bored .Then my
father put his head out of the window .“ Look ！”he said .“What’s that ？”We all cried .“It’s a plane ！”said my
mother .“ Do you remember a new airport was built near our house last year ？” “Yes ， I remember .”I said . “I think it’s a military plane ，”said my father .“Look ， it’s flying in formation （编队）.” “Formation ？” cried my mother .“ In formation ？ ” said my father .“What are they doing ？ Is it a practice ？ Or is it a display （表演） ？ I don’t know .” “Wouldn’t it be wonderful if we had as many pets as some peoples ！”my mother said .“I’d like a golden retriever .” “I’d like a pug（哈巴狗）””I’d like a monkey ！”I said .“Hang on ！”said my father .“I think we’d better go back
home .”
We all felt better by the time we got back to the beach .The wind had gone .And there was a beautiful plane
flying over head .But I can’t remember its color .