它不仅需要大笔的钱，而且还需要很长的运作周期。

And it takes not just lots of money but long lead times.

youdao

生物钟以自己的内在周期运作。

The clock oscillates at its own endogenous, or internal, period.

youdao

生物钟以自己的内在周期运作。

The clock oscillates at its own endogenous, or internal, period.

youdao