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1·Figure 3 shows the pin area in use.

图 3 展示了别针区域的应用情况。

2·The Changchun subway will be in use.

长春地铁将投入使用。

3·The stand-ins are already in use on Line 6.

这些替代品已经在6号线上投入使用了。

4·The version in use today was also adapted by German Franz Eckert to fit a Western scale.

今天使用的版本也被德国的弗朗兹·埃克特改编成符合西方标准的版本。

5·At present, throughout the world, over 80% of the land that is suitable for raising crops is in use.

目前，在世界范围内，80%以上适合种植农作物的土地都在使用中。

6·It's also not clear whether the organism, first engineered by a German institute for biotechnology, is still in use.

目前还不清楚这种最先由德国生物技术研究所设计的有机体是否仍在使用。

7·The United States National Resource Defense Council has found that DDT was the most popular of a long list of dangerous chemicals in use.

美国国家资源保护委员会发现 DDT 是一系列使用中的危险化学品里最受欢迎的一种。

8·Many of the sound effects he pioneered are still in use today, like creating thunder by pulling on one of the corners of a thin copper sheet.

他首创的许多音效至今仍在使用，比如通过拉动薄铜板的一角来制造雷声。

9·When not in use, the fins are tucked into special grooves or depressions so that they lie flush with the body and do not break up its smooth contours.

当鱼不使用鱼鳍时，会将它们折叠起来，收回到特殊的沟槽或者凹陷部位；这样鱼鳍就可以与身体保持齐平，以维持它们平滑的外形。

10·Temporal hours, which were first adopted by the Greeks and then the Romans, who disseminated them through Europe, remained in use for more than 2,500 years.

计时法最初由希腊人采用，后来由罗马人在欧洲传播，至今已使用了2500多年。