|
關注：1
2013-05-23 12:21
求翻譯：A survey of 58 butterfly species found that some species had experienced a 71% population swoon since similar surveys were taken in 1970 through 1982. Some 201 bird species were tracked between 1968 and 1971, and then again from 1988 to 1991. An analysis showed that that avian population had declined by about 54%.是什么意思？ 待解決
 懸賞分：1
- 離問題結束還有
A survey of 58 butterfly species found that some species had experienced a 71% population swoon since similar surveys were taken in 1970 through 1982. Some 201 bird species were tracked between 1968 and 1971, and then again from 1988 to 1991. An analysis showed that that avian population had declined by about 54%.
問題補充： |
湖北省互聯網違法和不良信息舉報平臺 | 網上有害信息舉報專區 | 電信詐騙舉報專區 | 涉歷史虛無主義有害信息舉報專區 | 涉企侵權舉報專區
