in case: 萬(wàn)一，如果
Bring your own soap, shampoo and towel just in case.
為了以防萬(wàn)一，可以帶上你自己的肥皂、洗發(fā)劑和毛巾。
In case I missed something?
以防我漏掉什么呢?

without strings: 無(wú)附帶條件
They offered medical aid without strings attached.
他們無(wú)條件地提供醫(yī)藥援助。
If a person seeks not to receive love, but rather to give it without strings attached, he will become lovable and he will most certainly be loved by others in the end.
如果一個(gè)人無(wú)條件的給予他人關(guān)愛(ài)，而不是尋求得到他人的愛(ài)，那么他將受人們的喜愛(ài)，并且最終肯定會(huì)得到他人的愛(ài)。

hold to: 堅(jiān)持
If your values serve you, hold to them.
如果你的價(jià)值適合你，那就堅(jiān)持你的價(jià)值。
If you hold to my teaching, you are really my disciples.
你們?nèi)舫３Ｗ袷匚业牡溃驼媸俏业拈T(mén)徒。