"Nothing really ails them," he said, "but they are so thin and weak."

“它们其实没有什么毛病，”他说，“它们只是太瘦弱了。”

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Eating only this food, she became very thin and weak.

只吃这种食品，她变得非常瘦弱。

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This increases their risk of osteoporosis, a condition marked by thin and weak bones that break easily.

这增加了他们患骨质疏松的危险，骨质疏松的症状是骨头薄，脆，容易碎。

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The great 19th-century philanthropists laid down their fortunes and set up their foundations in the days when profits were fat, taxes thin and labour weak.

ECONOMIST: How to spend money and influence people

Liquorice, who is actually a young male grey seal, was weak and very thin when he was found by a member of the public.

BBC: Black seal pup rescued from Aberdeen beach

Corporate loan demand is weak and net interest margins are thin.

ECONOMIST: Swallow hard