Because these seeds are so little, you may need to buy a special bird feeder with smaller openings to hold it.

因为因为这些种子很小，所以你需要购买一种特殊的喂食，这种喂食比较小，可以稳住种子。

Next, the signal is sent to the frequency and phase comparator, which wants the two signals to be identical.

接下来， 信号被发送到相位比较，它希望两个信号完全相同。

In the middle is a frequency and phase comparator that outputs a signal equal to the difference between the crystal and the voltage-controlled oscillator.

中间是一个相位比较，它输出一个等于石英晶体电压控制振荡之间差值的信号。

Next, an integrator takes the output from the phase comparator and turns it into a steady voltage and uses it to drive the voltage-controlled ring oscillator.

接下来，积分会接收相位比较的输出，并将其转换为稳定的电压，然后用来驱动电压控制环形振荡。