n.[C]

1. 运送人；搬运人；送信人
   I applied for the job as a mail carrier.

   我申请邮差的工作。

2. 从事运输业的人（或公司）
   The commercial carrier is doing a lively business.

   那家商务运输公司业务繁忙。

3. 航空母舰
   The missile was launched from the aircraft carrier.

   导弹是从航空母舰上发射的。

4. （自行车等的）置物架；（车子的）货架
5. 【医】带菌者；媒介物
   Meat, improperly handled, is a lethal carrier of bacteria.

   未经适当处理的肉是危险的带菌物。

n.

1. a person or thing that carries, holds, or conveys something.
2. a person or company that undertakes the professional conveyance of goods or people.
3. a person or animal that transmits a disease-causing organism to others, especially without suffering from it themselves.
   ▸Genetics  an individual possessing a particular gene, especially as a single copy whose effect is masked by a dominant allele, so that the associated characteristic is not displayed but may be passed to offspring.