Thioformaldehyde
硫甲醛, 三聚甲硫醛
🗣️ 情景例句
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Merry Christmas!
圣诞快乐！
riding on its air cushion over a single rail, which it never touches,at speeds up to 300 m.p.h.----the possibilities appear unlimited.
靠气垫在单轨上行驶而不接触轨道，时速可达每小时300英里。气垫船的前途是不可限量的。