easy的副词用英语怎么表达？

　　The disease spreads easily.

　　这种疾病容易传播。

　　Dennis made friends easily.

　　丹尼斯容易交上朋友。

　　Chris is not easily roused.

　　克里斯不容易激动。

　　She doesn't give up easily.

　　她决不轻易认输。

　　This material frays easily.

　　这布料容易磨损。