This bird can 't fly because it' s too heavy.

这只鸟不能飞因为它太胖了。

youdao

Second, Venezuela's crude is too heavy and too sulfurous for China's refineries once it gets there.

FORBES: Energy Outlook 2009

It's just unclear if that's going to be too heavy even in a good, good year for Democrats.

NPR: Ahead Of Election, GOP Senate Seats Vulnerable

Fendi's iPad case is gorgeous, but it turned out to be heavy and too big to slip into another bag easily yet too small to carry wallets, keys and other items.

WSJ: Wanted: Satchel to Carry Everything