endSync() { closed = true; return totalBytes; },
"We don't really understand early church sites... how they functioned, what they looked like, how they were organised.
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从研发投入规模区间分布情况看，中国已经形成一个由头部企业主导、庞大腰部力量支撑、众多小微企业补充的多层次协作的创新生态。