流沙（8）其实流得很慢；拳击台（9）是方形的；实验用的小豚鼠（10）的老家不是几内亚，长相和猪属于两种型。

We find that quicksand(8) can work slowly, boxing rings(9) are square and a guineapig(10) is neither from Guinea nor is it a pig.

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类似的动物类似的或相关的啮齿动物，如水猪、河狸鼠和刺豚鼠。

Any of various similar or related rodents, such as the capybara, coypu, and agouti.

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