Common indoor plants may prove to be a valuable weapon in the fight against rising levels of indoor air pollution.

普通室内盆栽植物可能是很有价值的武器，可以用来对付日益严重的室内空气污染。

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To the extent that this fear can discourage traders from buying oil, the president may have a weak, blunt, but not altogether futile weapon against ever-rising prices that does not require lifting a finger.

FORBES: Will Obama Pull The Trigger On The Strategic Petroleum Reserve?

In part, however, it reflects the tightening of the ratchet that began long before he came to power: the rise of scandals, the rising use of law as a weapon of attack, the uniting of these two trends in lawsuits based on scandalous allegations.

ECONOMIST: The Paula Jones ratchet