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

因为因为这些小，所以你需要购买一特殊的喂食器，这喂食器开口比较小，可以稳住。

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

接下来， 信号被发送到频率和相位比较器，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.

是一个频率和相位比较器，它输出一个等于石英晶体和电压控制振荡器之差值的信号。

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，积分器会接收相位比较器的输出，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器。