Partly and partially both mean 'not completely'. * partly 和 partially 均指部分：◆The road is partly/partially finished.道路完工了一部分。Partly is especially used to talk about the reason for something, often followed by because or due to. * partly 尤用以说明原因，其后常跟 because 或 due to：◆I didn't enjoy the trip very much, partly because of the weather.我旅行过得不太愉快，部分是因为天气的缘故。Partially should be used when you are talking about physical conditions.指身体状况时应用 partially：◆His mother is partially blind.他的母亲失去了部分视力。