YSK the length of your hand, forearm and at least a finger. It will be useful to measure things when there's no ruler nearby
from /r/YouShouldKnow
YSK的長度爲你的手、前臂和至少一個手指。當附近沒有尺子時,它對測量東西會很有用。
YSK的長度爲你的手、前臂和至少一個手指。當附近沒有尺子時,它對測量東西會很有用。
YSK the length of your hand, forearm and at least a finger. It will be useful to measure things when there's no ruler nearby
from /r/YouShouldKnow