China may be a future superpower, but as far as America is concerned that will not occur until the middle of the next century, whereas Japan is already a problem. It will take China thirty or forty years at least to catch up with America, while Japan already poses a direct challenge.
中國有可能成為下世紀強國，但對美國來說那是下世紀中葉以後的事，日本則是眼前的問題；中國要追上美國起碼還要三、四十年，日本這幾年已經是直接挑戰。