Time transfer by laser is the most precise one in several time comparison methods.

激光时间传递技术是目前几种时间比对技术中精度最高的一种.

I wash my hands several time a day due to my job and the lotion has kept my skin from becoming dry and cracked.

因为工作原因，我每天要洗几次手，这款乳液使我的手没有干燥和开裂。