Apple seeds for instance contain a chemical that releases cyanide when it comes into contact with digestive enzymes.

例如苹果籽含有苦杏仁（amygdalin，或扁桃），一旦遇到动物的消化酵素就会释出氰化物。

His treatment plan includes, like, mistletoe, B-17, and natural killer cell injections.

他的治疗方案包括像槲寄生、苦杏仁/B17自然杀细胞注的疗法。

The so-called vitamin B17, known as laetrile, is banned in the U.S. and many other countries.

所谓的维生素B17，即苦杏仁，在美国许多其他国家都被禁止。

Most wild almond seeds contain an intensely bitter chemical called amygdalin, which (as was already mentioned) breaks down to yield the poison cyanide.

大多数野生杏仁种子含有一种叫做苦杏仁的强烈苦味化学物质，它（如前所述）会分解产生有毒的氰化物。

The explanation is that occasional individual almond trees have a mutation in a single gene that prevents them from synthesizing the bitter-tasting amygdalin.

解释是，偶尔个别杏仁树的单个基因发生突变，导致它们无法合成苦味的苦杏仁。