与其他phocids物种（如灰海豹）相比，港海豹体型较小。众所周知，灰海豹在整个哺乳期都禁食。

Harbor seals are small compared with other phocids species such as grey seals, all of which are known to fast for the entire lactation period.

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与其他phocids物种（如灰海豹）相比，港海豹体型较小。众所周知，灰海豹在整个哺乳期都禁食。

Harbor seals are small compared with other phocids species such as grey seals, all of which are known to fast for the entire lactation period.

youdao