这两个形容词都有表示“深的”之意。
deep : 普通用词，指由上到下，或由表及里的深度，可指具体或抽象事物。
- a deep well/mine
深井／矿 - a deep river/sea
很深的河／海 - a deep cut
很深的伤口 - The hole is so deep you can't see the bottom.
那个洞深不见底。 - The water's not deep here - look, I can touch the bottom.
这里水不深——瞧，我可以碰到底部。 - Drill 20 holes, each 2 inches deep.
钻20个孔，每个孔2英寸深。 - The water's only ankle/knee/waist-deep, so we'll be able to get across the river easily.
水深只到脚脖子／膝盖／腰部，所以我们能轻松过河。 - Take a few deep breaths (= breaths that fill the lungs with air) and calm down.
做几次深呼吸平静下来。
profound : 语气较强，较为庄重，多指抽象的事物，多用于比喻。
- profound truths/wisdom
深奥的真理／博大的智慧 - The review that I read said that it was "a thoughtful and profound film".
我看过的评论说它是一部“有创意、有深度的电影”。 - "Dying is easy - it's living that's the problem." "That was very profound of you, Steven."
“死很容易——活下去才是难题。”“史蒂文，你的话真深奥！”
