1. Both poisons are unpleasant,
    这两种毒液都很可怕，

2. Poison makes people sick; some poisons kill people as well as birds and animals.
    毒物会使人生病；有些毒物不但会毒死鸟和动物，还会毒死人。

3. If water contains poisons and chemicals, it is poison.
    如果水里含有有毒物质和化学物质，水就成了毒物。