Now, we're doing something new making skin strong enough that it doesn't wrinkle, become dry, or develop blemishes.
现在我们正在做一些改进,使皮质变得坚韧而不致有皱纹,变干或产生磨损。
We enjoy staring at them, entranced as they go about their business, unaware (we hope) of our presence.
我们喜欢入迷地看它们做事,它们不知道(但愿如此)我们就在它们身边。