The wood on either side was full of singular noises, among which--once, twice, and again--he distinctly heard whispers in an unknown tongue.
两边的树林里,充满了奇异的声响,在这些声音当中,他听到了,非常清晰,一次,两次,再一次——有人在用一种他听不懂的语言低声耳语。
They were interviewed twice -- once at the start of the study and again 12 months later.
这些青少年接受两次采访,第一次在研究开始的时候,一年之后再进行一次采访。
You're also reading through all the data twice: once for reading it into the document object, then again when walking through the document object.
您还将浏览所有数据两次:第一次浏览用于将其读入文档对象,然后在遍历文档对象时进行第二次浏览。
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