Welder's helmet
[化] 焊工帽罩
🧩 词语组成解析
helmet
['hɛlmɪt]
n. 头盔;钢盔;盔形物，盔状物;[植]盔状花冠;
vt. 给…戴上头盔;
🗣️ 情景例句
Is he a client?
他是顾客吗？
Idleness is the rust of the mind.
懒惰使脑子生锈。
So the number of stars that we know exist is now estimated at about 300 million million million.
因此，我们所知道的现有恒星数目估计约有30亿×1000亿颗。