Welding slag
[化] 焊渣
?? 詞語組成解析
a. 焊的\\n[機] 熔接, 焊接, 鍛接
slag
[sl?ɡ]
n. 礦渣;熔渣;
vt.& vi. （使）成渣（狀）;變熔渣;
??? 情景例句
Good afternoon. Make yourself at home.
下午好。請隨便些。
Big deal!
有什么了不起？
It is better to ask for help at the beginning rather than to wait until a busy period when everyone is rushed off their feet.
最好在開始工作時就請人幫忙，而不是等到大學都忙得不可開交的時候。