1·A fusion factor exists separate from the virus 'ability to hemolyze.
融合因素未必能与病毒溶血能力分开。
2·They might not hemolyze spontaneously in the bottle, but they did not survive after transfusion.
红细胞可能没有自然地使溶解在瓶里，但红细胞在输血后不会生存。