Request number
[化] 申请号
🧩 词语组成解析
🗣️ 情景例句
Hi. Michelle,
嗨， Michelle，
That's a tough question to answer.
那是一个很难回答的问题。
It can take as long as eight days to rig up rope ladders and to establish supply bases before a descent can be made into a very deep cave.
有时需要花费整整8天时间来搭起绳梯，建立供应基地，然后才能到一个很深的洞穴里。