Chinese phrase
年龄须达〜岁 nián líng xū dá 〜 suì
Meaning
must be at least ___ years old
When to use it
States that someone must be at least a stated age. It is common in rules, notices, and other formal statements, with the age filled in as needed.
Example dialogue
孩子可以单独入住吗？ hái zi ké yǐ dān dú rù zhù ma
Can a child stay alone?
有规定，年龄须达12岁才能单独入住。 yǒu guī dìng nián líng xū dá 12 suì cái néng dān dú rù zhù
There is a rule: guests must be at least 12 years old to stay alone.