adj. 批评的,爱挑剔的;关键的;严重的;极重要的;
💡 crit判断,分辨+ical...的 → 批评的;危险的
"Now that the situation becomes critical, one must keep calm."
事到临头, 要沉住气.
近义:key, momentous, significant, weighty, winning, watershed
反义:idle, immaterial, inane, inconsequential, inconsiderable, ineffective
adj. 害怕的;担心的;恐怕;畏惧,害怕;
💡 词根af-向,词缀raid打、袭击,“担心挨打
"It's all over. There's nothing to be afraid of now."
一切都结束了。现在没有什么可怕的了。
近义:apprehensive, intimidated, nervous, awed, awestricken, awestruck
反义:intrepid, mettlesome, nervy, audacious, plucky, rash
n. 食物,食品;粮食;养料;资料;
"Vitamin D is necessary to aid the absorption of calcium from food."
从食物中吸取钙需靠维生素D的帮助。
近义:meal, mess, nourishment, nutrient, nutriment, nutrition