be a stranger

• Yet , who knows how long you ll be a stranger
  可是，谁晓得你作客还要作多久呢？
• He is a stranger to the operation of the helicopter
  他对直升机的操作很陌生。
• I am a stranger here . can you help me
  我是个外地人不认得路。能帮忙指个路吗？
• Not that . . . not that this is a strange place
  不是，不是说这里是个古怪的地方
• There seems to be a strange man dressed as an elf
  出现了一位身穿圣诞老人服装的怪人
• He is a stranger to the operation of the helicopter
  他对直升机的操作很陌生
• Not that . not that this is a strange place
  不是，不是说这里是个古怪的地方
• Theirs is a strange love . i can ' t understand it
  真是奇怪的爱情，我理解不了
• She looked at me as if i were a stranger
  她看我的样子好象我是陌生人一样。
• Some might think this is a strange coincidence , but i do not
  我知道这一切都不是巧合