Block welding
[化] 多段多層焊
?? 詞語(yǔ)組成解析
block
[blɑk]
n. 塊;街區(qū);<英>大樓，大廈;障礙物，阻礙;
vt. 阻止;阻塞;限制;
a. 焊的\\n[機(jī)] 熔接, 焊接, 鍛接
??? 情景例句
These are polite questions.
這些問(wèn)題都是禮貌的。
It must be about three thirty.
現(xiàn)在想必是三點(diǎn)三十分左右。
Winter was coming on and the hills threatened the surrounding villages with destruction, for heavy rain would not only wash away the soil but would cause serious floods as well.
冬季即將來(lái)臨，這些山丘對(duì)周圍的村莊具有毀滅性的威脅，因?yàn)榇笥瓴粌H會(huì)沖走土壤，而且還會(huì)引起嚴(yán)重的水災(zāi)。