By 2015, all 30 MLB ballparks must have either handheld or walk-through metal
detectors in place, the league has informed teams.
"This procedure, which results from MLB's continuing work with the Department
of Homeland Security to standardize security practices across the game, will
be in addition to bag checks," said MLB spokesman Michael Teevan.
As the AP notes, the Mariners will have such measures operational in time for
the upcoming season.
As with all such security measures, the challenge is of course striking a
balance between safety and customer convenience, and it will probably take
some time to find that balance
2015年將會全面上路，每個球場都需要有手持的或是步行通過的金屬探測儀器
MLB發言人Michael Teevan:這代表人MLB正持續致力於國家的保安
水手隊在接下來的球季就會有相關的儀器
http://ppt.cc/RdJ-