Roentgendefectoscopy
伦琴射线探伤法
🗣️ 情景例句
He never speaks unless he is spoken to.
除非别人先对他开口，他从不先开口。
They have been much too irresponsible for their high position.
他们虽身居要位，未免太缺乏责任感了。
who can gratify every caprice and lay their hands on almost every object of desire----
他们能够恣意妄为，能染指一切追求的目标。