■ dosage 与 dose

dosage 是经常服用某一药物的规定剂量，dose 则是具体某次服用的剂量。

• Last night, before going to bed, I took a large dose (*dosage) of castor oil.我昨夜临睡前服用了大剂量的蓖麻油。
• She took twice the prescribed dose (*dosage) of sleeping tablets.她服用了双倍于处方剂量的安眠药（虽然是 prescribed，但仍然是具体一次而不是普遍的剂量）。

• confidence
• conflicted
• confront
• confront 与 face
• confuse
• congratulate
• congratulate
• congratulate 与 wish
• congratulations
• congress
• congressman
• connection
• conscientious
• conscientious, conscious 与 consent
• conscious
• conscious
• conscious
• consent
• consider
• consist
• consistent
• conspire
• constituency
• consult
• consult with