adv. 一次,一趟;一倍;曾经;一旦;
conj. 一旦…就…;一经;
n. 一次,一回;
💡 on=one一+ce次 → 一次
"Once in the bloodstream, the bacteria adhere to the surface of the red cells."
细菌一进入血液里,就附着在红细胞表面上。
近义:heretofore, occasionally, onetime, previously, sometimes, thereinbefore
n. 旋转;转向;转弯处;车工工艺;
v. 转动;扭转;(使)变成;“turn”的现在分词;
💡 turn转+ing名词后缀 → 转向;旋转
"Not turning up was just a cop-out."
不露面只不过是在逃避而已。
近义:turn, bend, corner, curve, revolution, rotation
n. 注意,注意力;照料,关怀;殷勤;
int. [口令]立正;
💡 at向+tent延伸+ion表名词 →伸展出去听别人讲 →注意力
"He nodded absently, his attention absorbed by the screen."
他专心注视着屏幕,只是心不在焉地点了点头。
近义:heedfulness, application, industriousness, intentness, interest, mindfulness
反义:apathy, impassiveness, impassivity, indifference, indolence, lassitude