例句：

　　Polar bears live in the Arctic.

　　北極熊生活在北極。

　　These were my Arctic adventures.

　　這就是我在北極的冒險經(jīng)歷。

　　It appears to be an idyllic domestic setup.

　　它看起來是一種田園式的家庭組織方式。

　　He suffered from diabetes and gastric ulcers.

　　他患有糖尿病和胃潰瘍。