that is ...that represents,前后平行
去掉插入语后句子结构是a hull that is ....and that thus represents....两个限制性定语从句构成并列,这里因为两个句子的逻辑是因果关系,所以用thus修饰represent
that与前面that 平行 thus副词,无本质意思
that represents 和 that is the...平行
that is… and that thus represents限定性定语从句的并列,同时修饰a 5,000-year-old wooden hull, 由于该并列结构存在着因果关系,因此添加副词thus修饰represents表明该逻辑关系
逻辑清晰,thus that is 和 that represents平行
The long dash is used to indicate an example or an aside. Only the example or aside goes inside the dash, so that example either has to go all the way to the end of the sentence or we need to "close" the dash at some point by putting a second one in. In this case, the "in other words" text only applies to the "built boat" concept, so I want to "close" the dash when I'm done talking about it.
A:that is… and that thus represents限定性定语从句的并列, 两个that同时修饰a 5,000-year-old wooden hull, 由于该并列结构存在着因果关系,因此添加副词thus修饰represents表明该逻辑关系
平行,that is, that represents, 去掉破折号
, that is… and that thus represents限定性定语从句的并列,同时修饰a 5,000-year-old wooden hull, 由于该并列结构存在着因果关系,因此添加副词thus修饰represents表明该逻辑关系
and并列两个that从句
a hull that is ... a boat and that represents...
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