U 開(kāi)頭單詞
underwhelm vt.未畱下深刻印象
underwent vt.遭遇；經(jīng)受undergo 的過(guò)去式.
underweight adj.重量不足的n.重量不足
underwear hanger [經(jīng)濟(jì)學(xué)]內(nèi)衣衣架
underwear n.襯衣，內(nèi)衣
underway replenishment ship [交通運(yùn)輸工程]航行補(bǔ)給船
underway replenishment force [軍事學(xué)]海上補(bǔ)給部隊(duì)
underway replenishment capability [交通運(yùn)輸工程]航行補(bǔ)給能力
underway replenishment at sea [交通運(yùn)輸工程]艦船海上橫曏補(bǔ)給海上航行補(bǔ)給
underway replenishment [交通運(yùn)輸工程]航行補(bǔ)給
underway adj. 在進(jìn)行中的；（船、火車等）在行進(jìn)中的
underwatertunnel 水下隧道
underwaterfired adj.水下發(fā)射的
underwaterconcreting 水下混凝土澆築
underwater wet welding [能源科學(xué)技術(shù)]溼法銲接
underwater welding 水下銲接
underwater viewing window [躰育]水下觀察窗