This fragmentation hurts portability. Code that performs well on one runtime may behave differently (or poorly) on another, even though it's using "standard" APIs. The complexity burden on runtime implementers is substantial, and the subtle behavioral differences create friction for developers trying to write cross-runtime code, particularly those maintaining frameworks that must be able to run efficiently across many runtime environments.
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Овечкин продлил безголевую серию в составе Вашингтона09:40
他表示，他與班德合作，將這項構想化為「克林頓全球倡議」的實際計劃。
Maggie 姐在新花都夜总会迎宾处前（图：南方人物周刊记者 方迎忠）