正确3期的倍投方法是什么

简介：The night along the Guzhang Street riverside is very quiet. The water of the Tear River is calm. You can only occasionally hear the sound of rushing water at night when it rustles. The embankments along the Leijiang River are built very high. Even if It was a once-in-a-century flood that did not overflow the river bank, so it is very safe and there is no need to worry about being flooded and putting people and property at risk.