一定的英文：
surely
certainly
necessarily
fixed
a certain (extent, etc.)
given
particular

參考例句：
  • The new show is certainly pulling in the crowds.
    新的表演一定很吸引人。
  • Make sure the top is screwed back tightly onto the jar.
    一定要把罐子蓋擰緊。
  • I'll help you insofar as I can.
    我一定盡力幫助你。
  • The party on Saturday night is going to be awesome. Booyah!
    周六晚上的聚會一定很棒，哦耶！
  • You must copy it fair.
    你一定要把它抄寫清楚。
  • To wander from a set course or point of attention; stray.
    離開一定的路線或注意點;游離
  • Take his vital signs at regular intervals.
    每隔一定時間檢查他的生命體征。
  • A lady who is house-proud must also like to keep open house.
    一個講究家里擺設(shè)的女人也一定很好客。
  • The effective permeability is stated as some numerical value at some given saturate conditions.
    有效滲透率用在一定飽和條件下的數(shù)值表示。
  • He must have hit the jackpot with the sales of his last gramophone record.
    他賣掉最后的一張留聲機唱片，一定賺了大錢。
surely是什么意思：
adv. 當然，無疑
  • brassard: "Sure, sure."
    布拉薩爾:“當然，當然。”
  • Make sure you get there in time.
    一定要準時到達那里。
  • Be sure not to let the truth slip.
    千萬別把真相泄漏出去。
certainly是什么意思：
adv. 無疑的，肯定的；當然，行
  • You are certainly a profiteer.
    你真是個奸商。
  • That ring is certainly the cheese.
    那只戒指無疑是精品。
  • You are certainly a talented artist.
    你當然是位有天賦的藝術(shù)家。

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