Get off a stop earlier make a circuit of the park at lunchtime walk the child to and from school get a dog feel yourself moving in moving air look listen absorb.
提前一站下车,吃午餐时绕公园溜一圈,让孩子徒步上学回家,养狗,在流动的空气中放松自己,观察,倾听和吸收。
The second reason is that it is difficult to make these circuit voltage controllable over a large frequency range.
第二个理由是很难做到将这些电路的电压控制在一个很大的频率范围内。
应用推荐