bow

Bow often refers to:

• Bow and arrow, a weapon
• Bowing, bending the upper body as a social gesture [姿态; 手势]
• An ornamental [装饰性的] knot made of ribbon

Bow may also refer to:

• Boats [船尾是stern]
  • Bow (ship), the foremost part
  • Bow (rowing), the foremost part of a boat
• Knots
  • Bow knot, a shoelace knot or a rosette [ 玫瑰花结]
  • Bow tie, a type of necktie
  • Pussy bow, a style of neckwear

bow-legs = 弓形腿; 罗圈腿; bow-window = 弓形窗; 凸肚窗
have two strings/a second, etc string to one's bow = 有两手准备
bow and scrape = 点头哈腰; 奴颜婢膝
bow to sth submit to sth; accept sth = 顺从某事物; 接受某事物

https://www.hss.edu/condition-list_bowlegs.asp
Bowlegs refers to a condition in which a person's legs appear bowed (bent outward) even when the ankles are together. It is normal in babies due to their position in the womb. But a child who still has bowlegs at about age three should be evaluated by orthopedic specialist. The many causes of bowleg syndrome range from illnesses such as Blount's disease to improperly healed fractures, vitamin deficiencies and lead poisoning:

• Illnesses and conditions that cause bowleggedness include:
• abnormal bone development (bone dysplasia) 骨发育异常（骨发育不良）
• Blount's disease (more information below)
• Paget’s disease (a metabolic [新陈代谢] disease impacting the way bones break down and rebuild)
• improperly healed fractures
• lead poisoning
• fluoride poisoning 氟化物中毒
• achondroplasia (the most common form of dwarfism) 软骨发育不全（最常见的侏儒症）
• rickets (a bone-weakening disorder caused by a vitamin D deficiency) 佝偻gōulóu病
• damage to growth plate 生长板(骺hóu板)损伤。骺板是一种薄板波浪状的软骨组织，是生长期骨骼的生长发育部位。

Blount's disease (also called tibia vara) [布朗特病也称胫骨内翻] is a growth disorder that affects the growth plates in the bones near the inside of the knee. Blount's slows down bone growth at these plates or halts growth there altogether. This leads to a bowlegged appearance and may also cause knee pain or instability.

There aren't many foods naturally high in vitamin D. That said, some of the best sources of vitamin D are fish liver oils and fatty fish, such as salmon and tuna fish. Eating foods fortified with calcium and vitamin D, such as milk, yogurt and orange juice, is an easy way to avoid a deficiency. Calcium and vitamin D work together. As calcium helps protect bone health, vitamin D helps the body to absorb calcium effectively... Spending five to 30 minutes under the sun at least twice per week is the best way to avoid a deficiency... 1 egg: 41 IU (10 percent DV).

有些药物的化学成分不恒定或还不能用理化方法检定其质量规格，只能通过生物实验方法与标准品进行比较来检定其效价。好比打饭时不说来份鱼香肉丝，而是说来半国际单位(IU)的。维生素委员会规定了如每1 IU的维生素E相当于1 mg等，但维生素D仍然沿用国际单位。[西药也不比中餐的盐少许精确嘛。]

A Daily value (DV) of 10% means that 10% of your calories [卡路里] should come from a particular nutrient.

For more information: Top Vitamin D Foods and Their 5 Major Benefits - Dr. Axe

六级/考研单词: bow, seldom, arrow, gesture, ornament, knot, ribbon, foremost, scrape, outward, ankle, norm, evaluate, syndrome, heal, fracture, vitamin, poison, abnormal, metabolism, affection, halt, liver, salmon, fortify, calcium, calorie, ax

能吃凉拌折耳根的可以吃鱼肝油。我吃朗迪碳酸钙D₃片，每片含钙500mg, 维生素D₃ 200国际单位。这药，甜的。