Mr Diamond has two lines of defence.

戴蒙德先生有两道防线。

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Yesterday's declaration, however, suggests that China is moving closer to scenarios long painted by defence experts under which it becomes more assertive and starts drawing lines for the US military.

但昨日的宣示似乎表明，中国正趋向变得更为自信，开始为美军划定底线，这正是防务专家们长期设想的情景。

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That low level response happens around-the-clock and is one of our body's first lines of defence.

那些低水平的反应每时每刻都在发生，是我们的机体首要防线之一。

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Its forces have trained hard for just such an engagement, as well as working on improvements to civil defence, supply lines, planning and public relations.

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The bottom line is that Mr Osborne has difficult times ahead, but the eurozone and the OBR have given him some very good lines of defence.

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And there were further lines of defence.

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