他老了很多。
Is being 20 years old a necessary or sufficient condition for being a college student?
就成为大学生而言，年满20岁是必要条件还是充分条件？
His clothes, as always, looked rather old: a blue jacket and grey trousers.
他的衣服像往常一样，看起来相当旧：一件蓝色的夹克和灰色的裤子。
Yoga itself is very old – a key part of classical Indian philosophy.
瑜伽本身很古老——它是传统印度哲学的关键部分。
You show the baby, say a six-month-old, a stage with a block on it.
将一个木块放在平台上,然后让一个六个月大的婴儿来观看
You show the baby, say a six-month-old, a stage with a block on it.
将一个木块放在平台上,然后让一个六个月大的婴儿来观看
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