Slipstone
n. (磨半圆凿的)成型油石
🗣️ 情景例句
Then, in college, I became good at it.
然后， 在大学， 我变得很精于数学。
I always answer Harmony in the department.
我总是回答说是部门的和谐。
and its owner his or her full intelligence;
和智力还有待发展和完善，