He's made hard metal sweat with the exertion of killing.

他让金属杀戮强力。

The muscles are as hard as a board, I answered.

肌肉得象木头一样。

To foil an opponent, it's strongest at the edges.

为了能阻挡对手，它边缘异常。

It's got a hard shell on the inside.

内部有一个壳。

Turtles and tortoises have hard shells which protect their bodies.

龟有龟壳来保护它们身体。

The knife was too blunt to cut through the tough meat.

这把刀太钝了，切不开肉。

I just needed something solid to stop the fray between those fraternal twins.

我正好要一个东西阻止双胞胎兄弟之间冲突。

A diamond is hard and capable of shaping other surfaces.

钻石很，能够塑造其他表象。

Enamel is the hard mineralized outer layer of the tooth.

牙釉质是牙齿矿化外层。

She specialises in eating tough seeds and nuts.

她擅长取食种子和果实。

Would you expect this substance to be hard and insoluble in liquids?

你是否认为这种物质质地并且不溶于液体？

Their think bark protects them close to the ground.

树皮保护它们贴近地面部分。

And it'll be five years before it's hard like a shield.

五年后它才会像盾牌一样。

You want to avoid roads, hard trails with uneven surfaces.

你要避开路面不平坦小径。

Only an electric drill is strong enough to do the job.

只有电钻够，可以进行这项工作。

A crack tooth can be caused by biting down on something hard.

牙齿开裂可能是由咬下东西引起。

He hammered some nails into the piece of hard wood.

他将一些钉子敲入那块木头中。

For one, they have a hard, mineralized layer on the outside.

首先，鳞片表面有非常矿化层。

Machines spray the insides with coloured sugar to give the beans their hard shells.

用机器在里部填充彩糖，形成外壳。

A solid rocky core could lie below, Bierson said.

比尔森指出，地下可能是岩核。