Six million hand driven rivets and 53,000 tonnes of steel were used in its construction.
这里面填的were used 和 have been used 有什么区别呢？ 一个是强调过去的事实 ，一个是和现在还有关注，或者对现在还有影响？ 求指点！
...mes bigger than what we see today，and served as food street in Japan. Asit moved indoors，restaurants wanted to distinguish their sushi as more refined.这段话最后短语as more refined表达什么含义，还有其中单词as的表达什么语义，我看不明白，请帮助指教
...
is commonly regarded as low impact (影响)
travel to undisturbed places. It is different from traditional tourism because it
allows the traveler to become educated about
the areas—both in terms of geographical conditions and cultural characteristics,
and often provides money for conservation and...
The occurrence and growth of many plant species are closely related to soil physical properties, as is the movement over and through soils of water and its dissolved nutrients and chemical pollutants.这句话在as后直接加系动词是什么用法呢？
While not as a meaty of an update as iOS 14.3, it comes with a handful of small enhancements.这be not as meaty an update as 为什么用了be not as a meaty of an update?这是一种什么表达方式呢？
...planted always too soon, and there was a freeze…. When was the last time they had grown tall and full, that the cold had held off and there was a crop. 请问专家，When was the last time they had grown tall and full, that the cold had held off and there was a crop.这句话中的that the c...
...is so,but
one theory suggests that dolphins meet humans rarely. Therefore, they are
interested in beings they don't find every day.Pregant
women are more unique sight.The
animal's fascinating natural sonar allows them to detect your state to rather detailed measure.老师们好！(a)
从逻辑上来...
A: My boss told me I couldn't take any time off to go on holiday this year.B: That's crazy! Did he say why?A:He said that the company is doing well so they need to be fully-staffed at all times.老师：您好！我不明白为何这里 need 后面要加“to be”呢？谢谢。
1.He thought it no use waiting here.2.They kept it quiet that he was dead.3.It is a waste of time your talking to him.第1，2,3句用it是什么语法现象?第1句是从句吗？no 是not any的意思吗，在该句中的no可以替换成not any吗？第2句是什么从句？It is a waste of time ...
So it is a bit confusing when vos Savant fields such queries[query] from the average Joe （whose IQ is 100）as,What’s the difference between love and fondness?Or what is the nature of luck and coincidence? 这里的as翻译为“就像”对吗？
...习惯的翻译）。比如： It was snowing thick and fast. Suggestions were coming in thick and fast. The enemy soldiers came thick and fast. New problems seem to come thick and fast. The election results were coming in thick and fast.
we see these road less areasas areas with an inherent value;something that merits being seen as a conservation target in its own right.road less areas 这里的less 是名词吗?something 后面的that merits 是定从 ，being seen as a conservation target in its own right.是过去分词短语做...