She looked round when she heard the noise.

她听到响声，就回过头去看。

《牛津词典》

She looked round at the sound of his voice.

听到他的声音，她扭头看了看。

《牛津词典》

She looked round her thrice, but no one followed her.

她向四周看了三次，但没有人追她。

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And the Russian looked in merciless mood on Court Suzanne Lenglen as she set up a second round clash with Japan's Ayumi Morita.

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Ivanovic had been distraught after a first-round defeat by Shahar Peer in San Diego last week and she looked set for another early exit when Azarenka served for the match on Monday night.

BBC: Ana Ivanovic beats Victoria Azarenka at Cincinnati Open

And it looked as though the Briton would be progressing to the next round when she coolly broke Martic for a third time to lead 3-2 in the second set.

BBC: Elena Baltacha, Melanie South & Katie O'Brien go out