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
Youth boredom is the main culprit behind youth crime.
年轻人的无聊是青少年犯罪最大原因。
Where there is no good within, no good comes out.
没有内心的美，就没有外在的美。
I not only spoke English very carefully, but very clearly as well.
我的英语讲得不但非常认真，而且咬字也非常清楚。