The effect of pollen development on the callus culture of tomatoes was studied.

Fig 2. Differentiation of young shoots from transformed callus.

图2:从基因枪轰击过的愈伤组织分化出大量的小苗.

I walked to him and took his outstretched hand which was rough with callus.

我走向他，握起他那长满老茧的手。

His callused hands had lost their tactile sensitivity.

他双手长满了老茧,对触觉不敏感了.

The long march had callused his feet.

长期的行军使他的脸上结茧了.

Labor left him a black face, hands and gradually Mochu of calluses.

劳动给他留下了一张黝黑的脸, 双手渐渐地磨出了老茧.

Skin protects itself by building up corns and calluses -- thick , hardened layers of tissue.

皮肤要保护自己,于是长了鸡眼和老茧, 那些是硬化了的皮肤组织.

These calluses have developed as a result of the way I work the tops.

这些茧是我在面板上工作时所造成的.

But calluses are another matter.

可足茧问题就没那么容易克服了.

Mix five crushed aspirin with one tablespoon of lemon juice and rub into calluses.

将一大汤匙柠檬汁和五片研碎的阿斯匹林混合并涂到老茧上.

This region which had been relatively calm erupted in violence again this spring.

已经相对平静的这个地区今年春天再次爆发暴力事件。

The two girls suddenly emerged from among the trees. Both seemed to be calm and unhurt.

那两个女孩突然从树丛中冒了出来。她们看起来都很镇静也没受伤。

an oasis of calm

宁静的一刻

They did what they could to calm her.

他们尽力使她平静下来.

Such a boat is fit only for a calm sea.

这种船只适于在风平浪静的海上航行。

Miriam's voice was strangely calm.

米里亚姆的声音异乎寻常地平静。

After the shooting, it was some hours before the police could restore calm to the neighbourhood.

枪击事件后, 警察花了好几个小时才使那个地区重新平静下来.

Through it all, Mark was outwardly calm.

自始至终，马克表面上都显得很镇定。

The sea was extraordinarily calm that morning.

那天清晨,大海出奇地宁静.

She tried to calm him down.

她设法使他平静下来.

Keep calm. Don't get excited.

冷静点,别着急.