He notes that many species of algae pack a far denser punch energy-wise than the plants now used as energy crops.

他注意到许多种海藻与现在用来作为生物能源作物的植物品种相比，可压榨出能源的浓度要高出许多。

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While far trickier to handle, lithium-ion cells pack twice the punch of their nickel-metal hydride equivalents.

但更为棘手的是，锂电池会是同等的金属氢化镍电池组效能的2倍。

youdao

Sometimes best way to deliver a punch is step back. But step back too far, you ain't fighting at all.

有时候，打出一记重拳的最好方法是退后一步，但是退后太多，你就已经退出比赛了。

youdao

But solid-oxide fuel cells are hardier and offer far more punch because they can use denser hydrocarbons as fuel.

FORBES: Magazine Article

He notes that many species of algae pack a far denser punch energy-wise than the plants now used as energy crops.

ECONOMIST: Using the sea to grow biofuel

He says very few fights end with a knockout punch, which is far more harmful than an unsightly laceration.

NPR: Mixed Martial Arts: Sport or Spectacle?