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食器，这种食器开口比较小，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， 信号被发送到频率和相位比较器，它个信号完全相同。

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间差值信号。

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输出，并将其转换为稳定电压，然后用来驱动电压控制环形振荡器。