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- 其他人落在后面很远。
The others are a long way behind.
- 几个孩子跟不上父母的步子,落在后面。
A few young children are straggling along behind their parents.
- 我们登山时他总是落在后面。
He always falls behind when we're going uphill.
- 我们出去散步时,孩子们总是落在后面。
The children always lag behind when we go for a walk.
- 他落在后面,所以他必须加快步子赶上我们。
He fell behind, so he had to quicken up his pace to catch up with us.
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