请你把中文翻译成为英文
美国在迪戈加西亚岛的军事基地驻扎大约50年了，目前岛上大约有3000至5000名美国军事人员。
The American military base has existed in Diego Garcia for about 50 years and there are currently between 3,000 and 5,000 US troops on the island.