This is the chief thing: not to be perturbed.

最要紧的一件事就是要沉住气。

youdao

Think too much, will only let you be perturbed, actually this is not so bad, worse.

想得太多，只会让你陷入忐忑，让实际上本不糟糕的事情，变得糟糕。

youdao

The measurement of alternating potential difference may be perturbed by stray current.

交变电位差的测量可能受到游散电流的影响。

youdao

Team boss Stephane Champeter will not be particularly perturbed he failed to win a stage as it was little more than preparation for the Tour de France.

BBC: SPORT | Other Sport... | Cycling | Cofidis, le Credit par Telephone

So she may not be too perturbed.

ECONOMIST: Indian politics and women

But even those who know recovery will be slow and painful are perturbed by the persistence of one particular symptom: poor export performance.

ECONOMIST: Asian exports