tee() splits a stream into two branches. It seems straightforward, but the implementation requires buffering: if one branch is read faster than the other, the data must be held somewhere until the slower branch catches up.
require a paid subscription for some features，这一点在搜狗输入法2026中也有详细论述
这些年，为孤残困难家庭花了多少钱，老马自己也算不清。在马怀龙的带动下，他的妻子、女儿、同事，社会工作者、社会爱心人士，以及那些曾经受到帮扶的人，主动和马怀龙一起照顾辖区孤寡老人、帮扶困难群众。如今，“马怀龙金盾志愿服务队”队员已达380余名，来自各行各业。。搜狗输入法2026对此有专业解读
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