1. 人造的；非自然形成的
    Artificial objects, materials, or processes do not occur naturally and are created by human beings, for example using science or technology.

    e.g. ...a wholefood diet free from artificial additives, colours and flavours...
           不含人工添加剂、色素和香料的天然食品
    e.g. The city is dotted with small lakes, natural and artificial...
           这个城市小型湖泊星罗棋布，有天然的也有人工的。

2. 人造的；不自然的；假的
    An artificial state or situation exists only because someone has created it, and therefore often seems unnatural or unnecessary.

    e.g. Even in the artificial environment of an office, our body rhythms continue to affect us...
           即使是在办公室这样的非自然环境中，我们的人体生物钟依然影响着我们。
    e.g. Removed from the artificial atmosphere of the fashion show, high-fashion clothes often look cheap and silly.
           脱离了时装表演营造的氛围，非常时尚的时装看上去常常显得既廉价又可笑。

3. 假装的；虚伪的；矫揉造作的
    If you describe someone or their behaviour as artificial, you disapprove of them because they pretend to have attitudes and feelings which they do not really have.

    e.g. The voice was patronizing and affected, the accent artificial.
           声音拿腔拿调的，听上去矫揉造作。

4. （味道、外观）不自然的，不真实的，添加非天然成分的
    If you say that food tastes or looks artificial, you do not like it because its taste or appearance does not seem genuine, and seems to be created by added substances.

    e.g. The meat was chewy and the sauce was glutinous and tasted artificial.
           肉嚼不烂，酱汁黏稠，味道也不自然。
    e.g. ...complaints that their tinned peas were an artificial shade of green.
           对他们的听装豌豆添加人工合成绿色素的投诉