vt.

1. 拉緊；拖緊；伸張
   The heavy box strained the rope to a breaking point.

   那隻沉重的箱子幾乎把繩子拉斷。

2. 盡力睜大（眼）；竭力喊[O2]
   She strained her eyes in the darkness.

   她在黑暗中睜大眼睛看。

3. 使過勞（以致受損傷）；扭傷
   John strained his eyes by reading too much small print.

   約翰因看過多的小字體而弄壞了眼睛。

4. 濫用；曲解，歪曲
   The official was warned not to strain his power.

   那個官員受到警告，不可濫用職權。

5. 過濾
6. 緊抱[（+to）]
7. 超越……之所及

vi.

1. 盡力，使勁[（+at/after/under）][+to-v]
   He strained to finish the work in a week.

   他拼命努力，想在一週內完成工作。

   They strained to row the boat.

   他們奮力划船。

2. 緊拉；緊拖[（+at）]
   He strained at the rope and the boat moved.

   他拉緊纜繩，船隨著動了。

3. 不肯接受，以為不可[（+at）]
4. 扭歪；彎曲；（因用力而）變形
5. 被過濾；滲出
6. 緊靠[（+against）]

n.

1. 拉緊；張力[C][U]
   The rope broke under the strain.

   繩子被拉斷了。

2. 負擔，沉重壓力[U][C]
3. （身心的）緊張狀態；過勞，操心[C][U]
4. （身體的）失常；扭傷[C][U]
   The athlete is suffering from muscular strain.

   這名運動員正受肌肉勞損之苦。

n.

1. （人的）血緣，世系；種，族[C]
   She is of a noble strain.

   她出身名門。

2. （動植物的）種，品種[C]
   This strain of wheat can grow during a cold spring.

   這種品種的小麥能在寒冷的春天生長。

3. 氣質，（性格上的）傾向[U][S1][（+of）]
4. 曲子，旋律，歌；詩節，歌節[P]
5. 口吻，語氣；筆調；情調[C]
   He wrote letters in a happy strain.

   他用愉快的筆調寫信。

v.

1. force (a part of one's body or oneself) to make an unusually great effort.
   ▸injure (a limb, muscle, or organ) by overexertion.
   ▸make a strenuous and continuous effort.
2. make severe or excessive demands on.
3. pull or push forcibly at something.
4. pour (a mainly liquid substance) through a sieve or similar device to separate out any solid matter.
   ▸drain off (liquid) in this way.

n.

1. a force tending to strain something to an extreme degree.
   ▸Physics  the magnitude of a deformation, equal to the change in the dimension of a deformed object divided by its original dimension.
2. an injury caused by straining a muscle, limb, etc.
3. a severe demand on strength or resources.
   ▸a state of tension or exhaustion resulting from this.
4. (usu. strains) the sound of a piece of music.

n.

1. a distinct breed, stock, or variety of an animal, plant, or other organism.
2. a tendency in a person's character.