poison的形容詞形式怎么寫

　　This gas is highly poisonous.

　　這種氣體有劇毒。

　　Poisonous smoke had got into the water supply

　　毒煙已經進入供水系統。

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

　　紫杉的各個部分都有毒，包括漿果。

　　There's absolutely no regulation of cigarettes to make sure that they don't include poisonous substances

　　根本沒有法規來確保香煙不含有毒物質。

　　There are hundreds of poisonous spiders and snakes.

　　毒蜘蛛和毒蛇成百上千。