In reindeer, even if they're missing a circadian clock, melatonin levels still spike when it's dark and drop when it's light, making the equinoxes an ideal time to synchronize their annual clocks.

而驯鹿呢，虽然它们没有昼夜节律钟，其褪黑激素水平仍然会在黑暗的时候上升，光亮的时候下降，从而使它们的昼夜分点达到理想状态，进而与年生物钟同步。

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It contains a low power, high speed, 16-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port.

它内置一个低功耗、高速、16位不失码的采样adc、一个内部转换时钟和一个多功能串行接口。

youdao

"The nurses from the hospital rang Alexander's brother just after ten o'clock on Sunday morning to say he had gone missing from the hospital, " she said.

BBC: Alexander McKee

Indecisive and tentative, the Wildcats opened the half by missing nine of their first 10 shots against the Bears' zone, many of those late in the shot clock and contested.

NPR: Cal Beats No. 7 Arizona 77-69 For Big Road Win

The town centre clock is being lit for 12 hours on Monday from 19:00 BST, the time April went missing.

BBC: April Jones: Machynlleth town clock lit in pink