By contrast, the hallmark of Chinese seafaring in 1402 was a motley collection of shallow-draft cargo junks that seldom ventured more than a mile or two from friendly shores.
The six-mile-high Chinese dust plume detected by CALIPSO appears as yellow-green swirls in this image.
通过卫星监测到的六米高的羽毛状尘埃云在图片中看似黄绿色的漩涡。
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But the growing vulnerability of American aircraft carriers to Chinese missiles will mean operating from well beyond the F-35’s 600-mile (1, 000km) range.