And this was painstaking work. What you have here is the photographic plate demonstrating a spread.

这是门,细致的工作。

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The combinatorial method, if it works, should make it a lot less painstaking, and a lot more profitable.

ECONOMIST: Combinatorial chemistry

The embassy Americans were eventually freed as a result of painstaking negotiation, a process Mr Vance had pressed for.

ECONOMIST: Cyrus Vance

After grilling you for a painstaking 20 minutes, each person will put a score next your name.

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