He used to go swimming in summer. Now he is used to running.

他以前夏天常去游泳，现在他习惯于跑步。

youdao

Hyperactive speculators, particularly high-frequency traders that use digital techniques to simulate the front running that used to go on in the pits, would probably complain loudly.

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"My legs were getting stiff as I'm not used to running that slow, even when training, " said O'Sullivan, who heeded advice not to go off too quickly.

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