Fortunately, the most significant potential limitations – land, water, and nutrients – seem unlikely to constrain global output excessively in the foreseeable future. But, while none is in short supply globally, local shortages may occur.
幸运的是，在可预见的未来，最大的潜在限制——土地、水和营养素——不太可能严重约束全球产出。但是，尽管从全球看这些要素并不短缺，但从局部而言并非如此。