essential
/ɛˈsɛnʃəl/
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adj./n. 必要的；不可或缺的；基本的
- A good pair of shoes is essential if you plan to walk around the old city all day. 如果你打算整天逛老城區，一雙好鞋是必備的。
其他意思
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adj. 必要的, 重要的, 本質的
Something that is essential is extremely important or absolutely necessary to a particular subject, situation, or activity.
- It was absolutely essential to separate crops from the areas that animals used as pasture
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n. 要點
The essentials are the things that are absolutely necessary for the situation you are in or for the task you are doing.
- The flat contained the basic essentials for bachelor life.
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字根
ess, est, sent 存在、是
ess + ent + ial存在 + 形容詞 + 形容詞