为了某次橱窗陈列，我花了两个星期制作这些鸟屋：从剪硬纸板到在上面画画到把布料贴在上面，一共一百个左右全部手工完成。
For a window display I spent about two weeks hand-making these birdhouses - cutting cardboard, painting them, and gluing fabric on about 100 of them.
没有自动定理证明器的支持，程序性质的证明全部需要程序员手工完成，工作量巨大。
Without automated theorem prover, programmers have to generate all proofs by hand, which is a huge workload.
没有自动定理证明器的支持，程序性质的证明全部需要程序员手工完成，工作量巨大。
Without automated theorem prover, programmers have to generate all proofs by hand, which is a huge workload.
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