Though the authors note as a curiosity that campaigns against secondary smoke predated the evidence that it did any harm, they show no desire to explore this seemingly reversed causality.
先有了抗议二次吸烟的运动，然后才出现相关的证据，虽然作者对此表示好奇，但他们并不打算深究这种似乎前后颠倒的因果关系。
Note the Smoke Alarm above the grandfather clock.
注意：以上祖父时钟烟雾报警器。
Note that if the group is under fire and crossing a danger area, smoke should be used extensively, and security for the crossing elements should be provided by suppression fires.
如果在穿越危险地带时遭到敌火力打击，就要多用烟雾弹，用压制火力掩护穿越的队伍。
Please note that the smoke setting can greatly affect game performance.
请注意，烟雾设置可以极大地影响游戏性能。
Please note that the smoke setting can greatly affect game performance.
请注意，烟雾设置可以极大地影响游戏性能。
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