热核武器

rèhé wǔqì 氢弹。

• 退役
• 退换
• 退步
• 退潮
• 退火
• 退烧
• 退热
• 退票
• 退税
• 退缩
• 退耕
• 退职
• 退色
• 退让
• 退赃
• 退赔
• 退路
• 退还
• 退避
• 退避三舍
• 退隐
• 送
• 送交
• 送人情
• 送别
• sooner or later
• sort of
• sort out
• so that
• so to speak/say
• sound off
• sound out
• so… that
• space out
• spark off
• speak about
• speak for
• speak ill of
• speak of
• speak one's mind
• speak to
• speak up/out
• speak well of
• specialize in
• speed up
• spell out
• spill out
• spill over
• spin out
• spirit away/off