Definition: to gradually affect a larger area Level: B2
火势因强风迅速蔓延。
The fire ___spread very rapidly because of the strong wind.
它最初是肝癌，但扩散到了身体的其他部位。
It started off as cancer of the liver but it ___spread to other areas of the body.
似乎火势可能会进一步蔓延。
It seemed that the fire might ___spread more.
