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
vi. 生存;居住;生活,过活;在生活中得到享受;
vt. 经历;度过;
"We cannot live without water."
没有水我们不能生存。
近义:last, reside, be, sojourn, subsist, dwell
反义:perish, vanish, part, croak, decease, depart