I'm afraid I'll be tied up until 7 o 'clock.; I'm afraid I won't be free until 7 o 'clock.

我七点钟以前恐怕抽不出身来。

《新英汉大辞典》

That is why it is so important that free and commercially independent research on plant genetics can be carried out in universities”, says Bengt O. Bengtsson.

这也是什么自由和脱离商业的植物遗传学研究可以在大学进行为显得如此重要的原因。

youdao

When you want to ask if someone might be free, you can say: How are you fixed for 2 o 'clock?

当你想问某人是否有空时，你可以说：How are you fixed for 2 oclock ？

youdao

But O'Connell will be free to play for Munster in the Heineken Cup tie against Biarritz on 3 April.

BBC: Paul O'Connell found guilty of punching Robert Sidoli

O'Neill was proving to be a key man again as he restored the four point lead with another free.

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United centre-back Nemanja Vidic appeared to be harshly punished for tugging at Frederic Piquionne's shirt as they went up for an O'Hara free-kick and Prince-Boateng, who missed a spot-kick last week, made no mistake this time.

BBC: Portsmouth 1-4 Man Utd