1.   There are all sorts of machines being developed to upgrade security.

2.   Also on Wednesday, Clinton signed a directive instructing all federal departments to upgrade security according to the standards set in the report.

3.   At hotels, visitors come and go easily, though most resorts have upgraded security, Bell said.

4.   Administration officials said Monday that after the first wave of emergency improvements are made, other ongoing steps will be needed to upgrade security in later appropriations.

5.   But administration officials said Monday that after the first wave of emergency improvements are made, other ongoing steps will be needed to upgrade security in later appropriations.

6.   Clinton outlined a seven-month timetable for upgrading security.

7.   Councilman Hal Bernson suggested the council should in the future debate whether to require private companies and landlords throughout Los Angeles to upgrade their security.

8.   Despite a concerted effort by airport officials to upgrade security, including the use of enhanced technology, Logan has experienced several problems since the terrorist attacks.

9.   He suggested that the states upgrade computer security and asked whether they had cataloged the vulnerability of critical sites.

10.   In addition, Washington has pledged to help Tashkent upgrade security at its research institutes and other sites where deadly germs and toxins are stored.

v. + security >>共 638
tighten 8.10%
provide 7.43%
step_up 5.27%
improve 4.37%
sell 4.33%
increase 4.28%
beef_up 3.25%
buy 3.22%
threaten 2.30%
guarantee 2.22%
upgrade 0.41%
upgrade + n. >>共 491
system 5.47%
facility 4.65%
equipment 3.08%
skill 2.71%
network 2.71%
technology 2.38%
service 2.22%
security 2.11%
relation 2.06%
quality 1.73%
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