1.   A shift in the weather pattern, bringing low pressure systems across the Alps in December laid down a firm base.

2.   Recent studies with ambulatory pressure monitoring systems indicate that an appreciable number of non-peristaltic contractions are commonly found in apparently normal subjects.

3.   All three extremes were related to a blocking high pressure system stalled over the upper Middle West this week.

4.   Although a high pressure system covers the West, moisture will increase across the Southwest and Great Basin, causing scattered thunderstorms.

5.   An elongated high pressure system will promote very pleasant conditions for most of the western half of the nation.

6.   An enormous high pressure system centered over Kansas will circulate the coldest air of the season into the East.

7.   An enormous high pressure system, centered over Montana, will control the weather in the western half of the nation.

8.   An expansive canopy of clear sky will cover much of the Eastern States as a tandem of high pressure systems govern the region.

9.   An expansive high pressure system will promote dry weather over the West on Monday.

n. + system >>共 804
computer 5.46%
school 2.85%
defense 2.63%
missile 2.33%
justice 2.00%
pressure 1.82%
tax 1.74%
security 1.68%
cable 1.60%
control 1.49%
pressure + n. >>共 366
system 27.40%
move 6.52%
defense 3.30%
situation 3.17%
area 3.08%
tactics 2.16%
zone 1.89%
center 1.72%
trough 1.63%
drift 1.28%
每页显示:    共 618