约42%的美国人至少有一个继亲，皮尤的调查结果显示，这些人往往觉得，自己对亲生父母、亲生子女或亲兄弟姐妹的义务感，比对继亲的义务感更加强烈。
The 42% of Americans who have at least one step-relative typically feel a stronger sense of obligation to their biological parent, child or sibling than to their step-relatives, the Pew survey says.
采用细菌的亲碱性溶果胶酶，能使三桠皮在5～7小时的碱性浸解中完全成浆，也能使构皮快速和选择性地制出高得率浆。
Mitsumatu is almost completely pulped in 5 to 7 hrs with alkaline pectolytic enzymes. Similarly, fast and selective high yield pulping can also be thus obtained for Kozo fibers.
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