复数： barks
第三人称单数： barks
过去式： barked
过去分词： barked
现在分词： barking
易混淆的单词： Bark

He gave john some alder bark .

他给了约翰一些桤木树皮。

The bark is usually ground up and sold in capsules or liquid form .

这些树皮通常被碾碎，以胶囊或者液体的形式贩卖。

Douglas-fir has a thick bark which protects the inner section of the tree from most fires .

道格拉斯冷杉有一层可以保护树里面部分的厚厚的树皮，使其免受大部分火灾的破坏。

What happens when nobody hears the watchdog bark ?

要是没人听到看门狗的吠叫，会发生什么事呢？

So far oil has been the " dog that did not bark " ; but it may yet give the global economy a nasty bite .

目前为止，高油价应了“恶犬不吠”这句话，说不定就会对世界经济狠咬一口。