This attitude adjustment can be especially challenging.
这种态度的调整可能特别具有挑战性。
Quality in software engineering is especially challenging because it is so difficult to measure
特别是，软件工程中的质量正在面临挑战，因为它极其难以度量。
The ergonomics of text entry will especially be challenging on a device that size.
在这样大小的一台设备上输入文字也着实考验着人体工学设计。
The ergonomics of text entry will especially be challenging on a device that size.
在这样大小的一台设备上输入文字也着实考验着人体工学设计。
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