grasp/catch/cluth at straws

grasp/catch/cluth at strawsdepend on sth. that is useless or unable to help in a time of trouble or danger; try sth. with little hope of succeeding 捞救命稻草（将要溺死之人连一根草也要去抓） * To depend on your memory without studying for a test is to grasp at straws. 应付考试只凭记忆而不学习那是枉费心机。

• be pinched for money
• psychoquack
• phases of the moon
• hornless
• runrounds
• frozen food
• epidemic keratoconjunctivitis
• zero-emission vehicle
• admit daylight into someone
• AVG
• Papen, Franz von
• hereaway
• nonisolated system
• Kafiristan
• quartermaster
• digestive biscuit
• Northumbrian
• predictable
• spearchuckers
• tailor
• photoelectric lighting control
• Brownian movement, Brownian motion
• bromacetone
• prowlers
• tubuliform glands
• CPU-bound
• ease sb↔out (of sth)
• hard of access
• whalelike
• uppings
• glycosphingolipids
• carp
• apercu,apercus
• chase tail
• rebounder
• lucratively
• right to life
• passive immunities
• show a clean pair of heels
• Donets Basin
• appanages
• solar radiation
• dissolubilities
• principle of reciprocity
• depth perception
• double cream
• moon's age
• sideways on
• joinings
• lost cause
• masjids
• give forth
• decompound
• cinderous
• fisherman's ring
• appeasement policy
• Afyon
• croutons
• macroeconomicss
• yodler
• bibliomania
• delimitates
• too much for someone
• revers
• at (long) last
• bare floor
• color center
• parasiticides
• understudying
• trickeries
• certificator
• toy soldiers
• cadmium chlorate
• lieutenant commander
• intitulation
• composite filters
• poxviruses
• supply-side
• under the auspices of
• deacon off
• barrier penetration
• debilitation
• Hawk
• ALA
• haemolytic anaemia
• the bane of one's existence (或 life)
• Don't (you) start!
• icrs
• foughten field
• Decubitus Ulcers
• bejasus
• breathe again
• be in a tight box
• FR
• swill out
• watercolourist
• Great Basin high
• albitite
• chimings
• because to