Hey's saw
[醫(yī)] 黑氏鋸(骨口擴大鋸)
?? 詞語組成解析
saw
[s?]
n. 鋸;諺語，格言;
vt.& vi. 往復移動;鋸成;用鋸;拉鋸;
v. 看見（ see的過去式）;觀看;領(lǐng)會;考慮;
??? 情景例句
Fortunately, they returned safely.
說來幸運，他們平安回家了。
He drinks a lot of milk every day.
他每天都喝很多牛奶。
In so far as any inquiry is a secret one,
任何一項研究都涉及到保密，