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INTERMEDIATE LEVEL


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OXF3000N quyết định cốt yếu chủ yếu crucial
OXF3000N bản chất thực chất cốt yếu yếu tố cần thiết essential








like: cốt yếu → →
crucial that...: It is crucial that we get this right. ☊ crucial ☊
it is essential that...: It is essential that you have some experience. ☊ essential ☊