Spherical triangle
n. 球面三角形
🧩 词语组成解析
🗣️ 情景例句
He accepted an offer of help.
他接受了援助的建议。
He is in conference.
他正在开会。
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。