1. “You know,” the woman says. “If you're going to take care of him, you really should be more careful.”
    "要知道，" 那女人说，"如果你要照看他，你必须更小心些。"

2. Charles Laveran, a French physician stationed in Algeria and later a Nobel laureate, took blood from a patient ill with malaria, and after two years of careful work (1878-1880) found that it contained tiny organisms under his powerful microscope.
    一位在阿尔及利亚工作站工作的名叫查尔斯·拉弗兰的法国医生——后来的诺贝尔奖金获得者——从一名疟疾患者身上抽取了血液。经过两年的仔细工作（1878—1880），在他的高倍显微镜下面发现里面含有微小的生物有机体。

3. Careful care of the body chemistry, she says, not only improves looks but also enhances energy processes and even expands awareness and mental function.
    她说，小心维护好人体的化学平衡不仅能改进外貌，而且也能增加活力，甚至能扩大意识和思维能力。

4. "Oh, nonsense; I´ll be very careful. Now let me try. Say, I´ll give you the core of my apple."
    “哦，胡说；我会很小心的。让我来试试。我把苹果的果核给你。”

5. It´s in the cupboard.Be careful not to spill the oil in the jar.
    在碗柜里, 小心不要把罐子里的油倒出来.

6. It´s in the cupboard.Be careful not to spill the oil in the jar.
    在碗柜里, 小心不要把罐子里的油倒出来.

7. It´s in the cupboard.Be careful not to spill the oil in the jar.
    在碗柜里, 小心不要把罐子里的油倒出来.

8. I´ll certainly be more careful,
    我以后一定会多加注意。

9. For the majority, the decision to study abroad is taken only after a period of at least six months of careful planning.
    对大多数学生来说，至少要经过6个月的精心筹划才能作出到国外学习的决定。