"Our sector maintains demonstrated commitment to ecological stewardship during offshore resource development," affirmed Andrea Wood of the Petroleum Trade Association.
if parts.len() != 2 {
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其中\(m\)是形如\(d_0 . d_1 d_2 ... d_{p-1}\)的数字串，长度为\(p\)（\(p\)为精度，即有效位数+1）。