及物动词
1. They strained on the rope to pull the boat in.
他们拉紧绳子以便使船靠岸。
2. strain的意思
2. She strained her eyes in the darkness.
她在黑暗中睁大眼睛看。
不及物动词
1. He strained at the rope and the boat moved.
他拉紧缆绳，船随着动了。
名词
1. The Irish strain in him makes him like jokes.
他的爱尔兰血统使他喜欢诙谐。
2. He has a strain of melancholy in him.
他有点忧郁。