Drop hammer: a machine consisting of an anvil or base aligned with a hammer that is raised and then dropped on molten metal used to forge or stamp the metal resting on the anvil.

落锤：由钻或底座及与之对齐的锤组成的机器，锤被举起后落在融化金属上用于锻造或冲压放在砧板上的金属。

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If you already have a postage stamp for the letter, you can just drop it into the mailbox at the street corner.

如果你已经在信上贴好邮票的话，直接投到街角的邮筒去就可以了。

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We'll hold back on final judgment until we use a review unit, but our initial swipe at this thing has us ready to drop a "for early adopters only" stamp on it -- for your average consumer just looking for an effective smartphone, it seems like it's got too many quirks and functionality holes to recommend.

ENGADGET: Nokia N900 quick hands-on Hands-on