The leaves of certain trees are poisonous to cattle.

　　某些樹的葉子會毒害牲畜。

　　All parts of the yew tree are poisonous, including the berries.

　　紫杉樹全身都有毒，包括其果實。

　　Our cars pump out thousands of tonnes of poisonous fumes every year.

　　我們的汽車每年排放出成千上萬噸的有毒尾氣。