1.   Author Michael Holden warned that common species such as cod, plaice and haddock could disappear in under five years, unless drastic measures were taken to limit catches.

2.   The most common species were the dunlin, oystercatcher, knot and lapwing.

3.   In the parasitic phase the two common temperate zone species develop on the surface of the intestinal mucosa whereas with the others some penetration of the epithelium takes place.

4.   Basic birding skills, such as using binoculars and familiarity with common species, are necessary.

5.   A common North American species, also found in Europe, is also called a scorpion fly.

6.   But the cool climate grass species common in this area go through activity and dormancy cycles that change the appearance of the grass from season to season.

7.   But the far more common species that blanket inland areas each year are largely missing.

8.   Even common species thrive at levels unprecedented in most regions.

9.   If it has been tried on people, it is being tried on pets, and not just on the most common species.

10.   In backyard gardens, which are usually surrounded by lawns, mulched beds or some ground cover, the night crawler is the most common species.

a. + species >>共 618
endangered 27.52%
new 5.82%
different 4.65%
native 3.04%
rare 2.96%
protected 2.54%
threatened 2.33%
animal 2.09%
the 1.93%
human 1.56%
common 0.74%
common + n. >>共 911
currency 3.44%
practice 3.14%
border 2.46%
problem 2.20%
cause 2.10%
criminal 1.77%
interest 1.72%
thread 1.54%
form 1.51%
share 1.34%
species 0.21%
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