Selective headstock
[化] 变速箱; 床头箱
🧩 词语组成解析
selective
[si'lektiv]
adj. 精心选择的;选择的，不普遍的;淘汰的;
n. 头座, 机头座\\n[机] 车头, 主轴台
🗣️ 情景例句
Bye.
再见。
Are you Bill Jones?
你是比尔、琼斯吗？
There has long been a superstition among mariners that porpoises will save drowning men by pushing them to the surface, or protect them from sharks by surrounding them in defensive formation.
长期以来，海员中流传着一种迷信的说法，认为海豚会把快要淹死的人托到水面，救人性命；或在人们周围列队保护，使他们免遭鲨鱼伤害。