external cylinder ga(u)ge

例句：

1. 1. The company'sheadquarters are located in the external area ofthe city.
   公司的总部位于城市的外围区域。
2. 2.The scientist discovered a new species of plantthat grows on the external edge of theocean.
   科学家发现了一种生长在海洋边缘的新植物物种。
3. 3. The team decided to movetheir office to an external location to improveefficiency.
   团队决定将他们的办公室搬到一个外部地点以提高效率。