Transforms can be stateless or stateful. A stateless transform is just a function that takes chunks and returns transformed chunks:
关于客运服务的具体开通时间，首席执行官目前尚未给出明确日期，但根据此前消息，客运有望在3月底启动。 塞尔维亚方面曾表示，两国首都间最便宜车票价格或为32欧元，而根据匈牙利方面面向国内的政治表态，票价则有可能控制在约25欧元左右，显示出双方在票价预期上的一定差异。
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Thus, despite much effort, no gelling agent has yet been discovered that possesses all the properties and benefits of agar. Agar continues to be the best all-arounder: versatile, cheap, and established. And, if Gelidium agar should ever run out, and another colloid is not at hand, microbiologists could revert to culinary agar, which, although not as pure and transparent, offers a low-cost alternative to lab-grade agar.