| 单词 | essential |
| 释义 | essentialessentialessential /ɪˈsenʃəl/ adjective1important and necessaryessential for/toA balanced diet is essential for good health.balancebe均衡的饮食对于健康至关重要。It is essential that we make a decision soon.be我们必须马上作出决定。it is essential to do somethingIt is essential to book tickets early.beticket必须提早订票。2most important or basic: The essential difference between them is their size.be他们最根本的区别是大小不同。THESAURUS: essentialnecessary if something is necessary, you need to have it or do it: Reservations aren’t always necessary.reservationI have all the necessary documents.documentessential very important and necessary, especially in order to be healthy, successful etc: Fresh fruit and vegetables are an essential part of a healthy diet.vegetablebeGood timing is essential.timebevital extremely important and necessary, because there will be serious problems without it: Tourism is vital to the local economy.bea vital piece of evidencevital equipmentcompulsory if something is compulsory, you must do it because of a rule or law: a compulsory training coursetrainobligatory formal if something is obligatory, you must do it because of a rule or law. Obligatory sounds stronger and more formal than compulsory: The use of seatbelts is obligatory.bean obligatory section of the test |
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