They feel I need to bulk up, and to improve my upper body strength.

他们觉得我需要变粗壮些，并增强上身的力量。

《柯林斯英汉双解大词典》

Ahermit thrush gulps down a wild berry to bulk up on antioxidants.

一只鸫吞下野生的浆果来囤积抗氧化剂。

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Supplements can be very helpful when you are trying to bulk up your body.

如果想增强你的身体，营养补充品大有裨益。

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Click here to bulk up your returns with immediate access to Forbes Special Situation Survey.

FORBES: Listen To Arthur Laffer

He is a good organiser and has started to bulk up and become a real physical presence.

BBC: Jeremy Guscott column

As capital flows accelerated, the banks were encouraged to bulk up like fitness freaks taking to steroids.

ECONOMIST: The unintended consequences of past financial reforms