Malcolm points out the irony in the White House having several official Twitter accounts, but blocking the service from its employees' computers.
Malcolm指出了白宫此举的讽刺性：一方面，白宫有一些官方账户，但是却禁止自己的雇员在自己的电脑上使用Twitter。
The inspection method to determine interior faults of the axle bearing by abnormal blocking sound felt by hand is introduced in detail, and points for attention are given out.
详细介绍了凭手感、卡阻、异音判断轴承内部故障的检查方法，并提出注意事项。
It was shown that the laws of points won and lost of serve, blocking and counter attack under the old rule still play an important role in the new rule.
结果表明，发球得分制下发球、拦网、防反等得失分规律在每球得分制规则下仍发挥着作用。
It was shown that the laws of points won and lost of serve, blocking and counter attack under the old rule still play an important role in the new rule.
结果表明，发球得分制下发球、拦网、防反等得失分规律在每球得分制规则下仍发挥着作用。
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