Air transport will soon be central, not marginal, to the emissions issue.
Air transport will soon be central, not marginal, to the emissions issue.
航空运输的排放物问题不久之后将由边缘走向中心。
Air transport will soon be central, not marginal, to the emissions issue.
航空运输的排放物问题不久之后将由边缘走向中心。