Joist steel
[化] 梁钢; 工字钢
🧩 词语组成解析
n. 托梁, 桁
steel
[stil]
n. 钢，钢铁;钢制品;兵器;钢铁工业;
vt. 包上或镀上钢;使坚定;
adj. 钢制的;钢铁业的;坚强的;[色彩]青灰色的;
🗣️ 情景例句
She's still giving the toughest English history exams
她仍用最艰深的英国史试题考学生
He took a strong attitude towards her.
他对她采取强硬态度。
The instrument was bought by my grandfather many years ago.
是我祖父在很多年以前买的。