读书时，我经常会在有问题的地方做记号。
While reading, I often make a mark where I have any questions.
向导如此困惑，他不知道怎么回答；当他和首领看到5,6家同样的记号时，更加困惑了。
The guide was so confounded, that he knew not what answer to make; but still more puzzled, when he and the captain saw five or six houses similarly marked.
它还详细描述了三个记号(加号、减号和整数)组合的具体项，解析器在扫描整个输入流时希望遇到这些项。
It also details in concrete terms the composition of the three tokens (a plus sign, a minus sign, and an integer) that the parser expects to encounter while scanning through the input stream.
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